# List of United Kingdom Parliament constituencies (1918–1945) by region
## South West (43)
### Cornwall (5)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Bodmin | Co. Conservative | Liberal | Liberal | Conservative | Liberal | Liberal | Conservative | Conservative |
| Camborne | Liberal | National Liberal | Independent Liberal | Constitutionalist | Liberal | Conservative | Conservative | Conservative |
| Cornwall North | Liberal | National Liberal | Liberal | Conservative | Liberal | Liberal | Liberal | Liberal |
| Penryn and Falmouth | Co. Conservative | Conservative | Liberal | Conservative | Liberal | Conservative | Conservative | Labour |
| St Ives | Coalition Liberal | Conservative | Liberal | Conservative | Liberal | Liberal National | Liberal National | Liberal National |

### Devon (11)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Barnstaple | Coalition Liberal | Conservative | Liberal | Conservative | Conservative | Conservative | Liberal | Conservative |
| Exeter | Co. Conservative | Conservative | Conservative | Conservative | Ind. Conservative | Conservative | Conservative | Conservative |
| Honiton | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Plymouth Devonport | Co. Conservative | Conservative | Liberal | Liberal | Liberal | Liberal National | Liberal National | Labour |
| Plymouth Drake | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Plymouth Sutton | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| South Molton | Coalition Liberal | Liberal | Liberal | Conservative | Liberal | Liberal National | Liberal National | Liberal National |
| Tavistock | Co. Conservative | Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Tiverton | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Torquay | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Totnes | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |

### Somerset (7)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Bath | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Bridgwater | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Ind. Progressive |
| Frome | Co. Conservative | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Taunton | Co. Conservative | Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |
| Wells | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Weston-super-Mare | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Yeovil | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Dorset (4)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Dorset East | Coalition Liberal | Ind. Conservative | Conservative | Conservative | Liberal | Conservative | Conservative | Conservative |
| Dorset North | Co. Conservative | National Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Liberal |
| Dorset South | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Dorset West | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Gloucestershire (11)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Bristol Central | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Bristol East | Coalition Liberal | National Liberal | Labour | Labour | Labour | Labour | Labour | Labour |
| Bristol North | Coalition Liberal | Liberal | Labour | Liberal | Labour | Liberal | Liberal | Labour Co-op |
| Bristol South | Coalition Liberal | National Liberal | Liberal | Liberal | Labour | Conservative | Labour | Labour |
| Bristol West | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Cheltenham | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Ind. Conservative |
| Cirencester and Tewkesbury | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Forest of Dean | Labour | Labour | Labour | Labour | Labour | National Labour | Labour | Labour |
| Gloucester | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Stroud | Coalition Liberal | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |
| Thornbury | Coalition Liberal | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |

### Wiltshire (5)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Chippenham | Co. Conservative | Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Devizes | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Salisbury | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Swindon | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Westbury | Co. Conservative | Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |

## South East (including London) (148; 161 in 1945)
### Oxfordshire (3)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Banbury | Coalition Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Henley | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Oxford | Co. Conservative | Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |

### Buckinghamshire (3; 4 in 1945)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Aylesbury | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Buckingham | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Eton and Slough | | | | | | | | Labour |
| Wycombe | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |

### Berkshire (4)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Abingdon | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Newbury | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Reading | Co. Conservative | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Windsor | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Hampshire (12)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Aldershot | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Basingstoke | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Bournemouth | National Party | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Fareham | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| New Forest and Christchurch | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Petersfield | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Portsmouth Central | Liberal | Conservative | Liberal | Conservative | Labour | Conservative | Conservative | Labour |
| Portsmouth North | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Portsmouth South | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Southampton (Two members) | Coalition Liberal | Conservative | Conservative | Conservative | Labour | Liberal National | Liberal National | Labour |
| Southampton (Two members) | Coalition Liberal | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Winchester | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |

### Isle of Wight (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Isle of Wight | Co. Conservative | Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |

### Surrey (12; 14 in 1945)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Chertsey | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Croydon North | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Croydon South | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Epsom | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Farnham | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Guildford | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Kingston upon Thames | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Mitcham | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Carshalton | | | | | | | | Conservative |
| Sutton and Cheam | | | | | | | | Conservative |
| Reigate | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Richmond (Surrey) | Co. Conservative | Ind. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Surrey East | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Wimbledon | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |

### Sussex (9; 10 in 1945)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Brighton (Two members) | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Brighton (Two members) | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Chichester | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Eastbourne | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| East Grinstead | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Hastings | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Horsham and Worthing | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | N/A |
| Horsham | | | | | | | | Conservative |
| Worthing | | | | | | | | Conservative |
| Lewes | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Rye | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Kent (15; 17 in 1945)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Ashford | Co. Conservative | Conservative | Conservative | Conservative | Liberal | Conservative | Conservative | Conservative |
| Bexley | | | | | | | | Labour |
| Orpington | | | | | | | | Conservative |
| Bromley | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Canterbury | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Chatham | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Labour |
| Chislehurst | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Dartford | Coalition Liberal | Constitutionalist | Labour | Conservative | Labour | Conservative | Conservative | Labour Co-op |
| Dover | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Faversham | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Gillingham | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Gravesend | Co. Conservative | Conservative | Labour | Conservative | Conservative | Conservative | Conservative | Labour |
| Hythe | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Isle of Thanet | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Maidstone | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Sevenoaks | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Tonbridge | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Middlesex (17; 24 in 1945)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Acton | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Brentford and Chiswick | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Ealing | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | N/A |
| Ealing East | | | | | | | | Conservative |
| Ealing West | | | | | | | | Labour |
| Edmonton | Co. Conservative | Labour | Labour | Labour | Labour | Conservative | Labour Co-op | Labour |
| Enfield | Co. Conservative | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Finchley | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Harrow | Co. Conservative | Independent | Independent | Conservative | Conservative | Conservative | Conservative | N/A |
| Harrow East | | | | | | | | Labour |
| Harrow West | | | | | | | | Conservative |
| Hendon | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | N/A |
| Hendon North | | | | | | | | Labour |
| Hendon South | | | | | | | | Conservative |
| Heston and Isleworth | | | | | | | | Labour |
| Hornsey | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Southall | | | | | | | | Labour |
| Spelthorne | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Tottenham North | Co. Conservative | Co-operative | Co-operative | Co-operative | Labour Co-op | Conservative | Labour Co-op | Labour Co-op |
| Tottenham South | Conservative | Conservative | Labour | Conservative | Labour | National Labour | Labour | Labour |
| Twickenham | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Uxbridge | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour Co-op |
| Wembley North | | | | | | | | Labour |
| Wembley South | | | | | | | | Labour |
| Willesden East | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |
| Willesden West | Co. Conservative | Conservative | Labour | Labour | Labour | Conservative | Labour | Labour |
| Wood Green | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### County of London (62)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Balham and Tooting | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Battersea North | Coalition Liberal | Communist | Liberal | Communist | Labour | Conservative | Labour | Labour |
| Battersea South | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour Co-op |
| Bermondsey West | Liberal | Labour | Liberal | Labour | Labour | Labour | Labour | Labour |
| Bethnal Green North-East | Coalition Liberal | Liberal | Labour | Labour | Liberal | Liberal | Labour Co-op | Labour Co-op |
| Bethnal Green South-West | Co. Conservative | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal | Labour Co-op |
| Bow and Bromley | Co. Conservative | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Brixton | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |
| Camberwell North | Co. Conservative | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Camberwell North-West | Coalition Liberal | National Liberal | Liberal | Conservative | Labour | Conservative | Conservative | Labour |
| Chelsea | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Clapham | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Deptford | Labour | Labour | Labour | Labour | Labour | Conservative | Labour Co-op | Labour |
| Dulwich | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Finsbury | Co. Conservative | Conservative | Labour | Labour | Labour | National Labour | Labour Co-op | Labour |
| Fulham East | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Fulham West | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Greenwich | Co. Conservative | Liberal | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Hackney Central | Coalition Liberal | National Liberal | Liberal | Conservative | Labour | Conservative | Labour | Labour |
| Hackney North | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |
| Hackney South | Independent | Conservative | Labour | Liberal | Labour | Conservative | Labour | Labour |
| Hammersmith North | Co. Conservative | Conservative | Labour | Conservative | Labour | Conservative | Labour | Independent Labour |
| Hammersmith South | Co. Conservative | Conservative | Conservative | Conservative | Labour Co-op | Conservative | Conservative | Labour Co-op |
| Hampstead | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Holborn | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Islington East | Co. Conservative | Conservative | Liberal | Conservative | Labour | Conservative | Conservative | Labour |
| Islington North | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Islington South | Co. Conservative | Conservative | Labour | Labour | Labour | Conservative | Labour | Labour |
| Islington West | Co. Conservative | Conservative | Labour | Labour | Labour | Conservative | Labour | Labour |
| Kennington | Coalition Liberal | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Kensington North | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Kensington South | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Lambeth North | Liberal | Liberal | Liberal | Liberal | Labour | Liberal | Labour | Labour |
| Lewisham East | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Lewisham West | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| City of London (Two members) | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | National |
| City of London (Two members) | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Norwood | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Paddington North | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Paddington South | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Peckham | Coalition Liberal | Conservative | Conservative | Labour | Labour | Conservative | Conservative | Labour |
| Poplar South | Coalition Liberal | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Putney | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Rotherhithe | Co. Conservative | Conservative | Labour | Labour | Labour | Conservative | Labour | Labour |
| St Marylebone | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| St Pancras North | Co. Conservative | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| St Pancras South East | Conservative | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| St Pancras South West | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Shoreditch | Coalition Liberal | National Liberal | Labour | Labour | Labour | Liberal National | Labour | Labour |
| Southwark Central | Coalition Liberal | National Liberal | Liberal | Labour | Labour | National | Labour | Labour |
| Southwark North | Coalition Liberal | National Liberal | Labour | Labour | Labour | Liberal National | Liberal National | Labour |
| Southwark South East | Coalition Liberal | National Liberal | Labour | Labour | Labour | Conservative | Labour | Labour |
| Stepney Limehouse | Coalition Liberal | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Stepney Mile End | Co. Conservative | Conservative | Labour | Labour | Labour | Conservative | Labour | Communist |
| Stoke Newington | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |
| Streatham | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Wandsworth Central | Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Westminster Abbey | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Westminster St George's | Ind. Conservative | Ind. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Whitechapel and St Georges | Liberal | Labour | Labour | Labour | Labour | Liberal | Labour | Labour |
| Woolwich East | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Woolwich West | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
See https://commons.wikimedia.org/wiki/Category:Locator_maps_of_former_parliamentary_constituencies_of_England_1917

## East Anglia (55; 62 in 1945)
### Bedfordshire (3)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Bedford | Coalition Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Bedfordshire Mid | Co. Conservative | Liberal | Liberal | Conservative | Liberal | Conservative | Conservative | Conservative |
| Luton | Coalition Liberal | Conservative | Liberal | Conservative | Liberal | Liberal National | Liberal National | Labour |

### Hertfordshire (5; 6 in 1945)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Hemel Hempstead | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Hertford | Silver Badge | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Hitchin | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| St Albans | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Barnet | | | | | | | | Labour |
| Watford | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |

### Huntingdonshire (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Huntingdonshire | Co. Conservative | Conservative | Liberal | Conservative | Liberal | Liberal National | Liberal National | Liberal National |

### Cambridgeshire (2)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Cambridge | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Cambridgeshire | Coalition Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |

### Isle of Ely (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Isle of Ely | Coalition Liberal | Conservative | Liberal | Conservative | Liberal | Liberal | Liberal | Conservative |

### Norfolk (8)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Great Yarmouth | Co. Conservative | Liberal | Liberal | Conservative | Liberal | Liberal National | Liberal National | Labour |
| King's Lynn | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |
| Norfolk East | Co. Conservative | Conservative | Liberal | Conservative | Liberal | Liberal National | Liberal National | Liberal National |
| Norfolk North | Coalition Independent | Labour | Labour | Labour | Labour | Conservative | Conservative | Labour |
| Norfolk South | Liberal | Conservative | Labour | Conservative | Conservative | Conservative | Conservative | Labour |
| Norfolk South West | Coalition Liberal | Liberal | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Norwich (Two members) | Liberal | National Liberal | Labour | Liberal | Liberal | Liberal National | Liberal National | Labour |
| Norwich (Two members) | Coalition Labour | Independent | Labour | Conservative | Labour | Conservative | Conservative | Labour |

### Suffolk (6)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Bury St Edmunds | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Eye | Coalition Liberal | Liberal | Conservative | Conservative | Liberal | Liberal National | Liberal National | Liberal |
| Ipswich | Co. Conservative | Conservative | Labour | Conservative | Conservative | Conservative | Conservative | Labour |
| Lowestoft | Coalition Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Sudbury | Liberal | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |
| Woodbridge | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Essex (20; 26 in 1945)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Chelmsford | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Common Wealth |
| Colchester | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| East Ham North | Coalition Liberal | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour Co-op |
| East Ham South | Coalition NDP | Co-operative | Co-operative | Co-operative | Labour Co-op | Conservative | Labour Co-op | Labour Co-op |
| Epping | Co. Conservative | Conservative | Conservative | Constitutionalist | Conservative | Conservative | Conservative | Labour |
| Essex South East | Co. Conservative | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Harwich | Co. Conservative | Liberal | Liberal | Conservative | Liberal | Liberal National | Liberal National | Liberal National |
| Ilford | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Ilford North | | | | | | | | Labour Co-op |
| Ilford South | | | | | | | | Labour |
| Leyton East | Coalition Liberal | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Leyton West | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Labour | Labour |
| Maldon | Co. Conservative | Conservative | Labour | Conservative | Conservative | Conservative | Conservative | Labour |
| Romford | Coalition Liberal | National Liberal | Conservative | Conservative | Labour | Conservative | Labour | Labour |
| Barking | | | | | | | | Labour |
| Dagenham | | | | | | | | Labour |
| Hornchurch | | | | | | | | Labour |
| Saffron Walden | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Southend-on-Sea | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Thurrock | | | | | | | | Labour |
| Walthamstow East | Co. Conservative | Conservative | Conservative | Constitutionalist | Labour | Conservative | Conservative | Labour |
| Walthamstow West | Coalition NDP | Labour | Labour | Liberal | Labour | Labour | Labour | Labour |
| West Ham Plaistow | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| West Ham Silvertown | National Socialist | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| West Ham Stratford | Co. Conservative | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| West Ham Upton | Co. Conservative | Conservative | Labour | Conservative | Labour | Conservative | Labour | Labour |
| Woodford | | | | | | | | Conservative |

## West Midlands (55; 58 in 1945)
### Shropshire (4)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Ludlow | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Oswestry | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Shrewsbury | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| The Wrekin | Coalition Liberal | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |

### Staffordshire (18)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Burslem | Labour | Labour | Liberal | Labour | Labour | Conservative | Labour | Labour |
| Burton | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Cannock | Coalition Labour | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Hanley | Coalition NDP | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Kingswinford | Labour | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Leek | Labour | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Lichfield | Coalition Liberal | National Liberal | Labour | Conservative | Labour | National Labour | National Labour | Labour |
| Newcastle-under-Lyme | Liberal | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Smethwick | Labour | Labour | Labour | Labour | Labour | Conservative | Conservative | Labour |
| Stafford | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Stoke-on-Trent | Coalition Liberal | National Liberal | Liberal | Constitutionalist | Labour | Conservative | Labour | Labour |
| Stone | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Walsall | National Party | Liberal | Liberal | Conservative | Labour | Liberal | Liberal National | Labour |
| Wednesbury | Labour | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| West Bromwich | Labour | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Wolverhampton Bilston | Co. Conservative | Conservative | Conservative | Labour | Labour | Conservative | Conservative | Labour Co-op |
| Wolverhampton East | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal | Labour |
| Wolverhampton West | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |

### Herefordshire (2)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Hereford | Co. Conservative | Conservative | Conservative | Conservative | Liberal | Conservative | Conservative | Conservative |
| Leominster | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Worcestershire (6)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Bewdley | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Dudley | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Evesham | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Kidderminster | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Stourbridge | Liberal | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Worcester | Co. Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Warwickshire (17; 20 in 1945)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Birmingham Acock's Green | | | | | | | | Labour |
| Birmingham Aston | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Birmingham Deritend | Co. Conservative | Conservative | Conservative | Conservative | Labour Co-op | Conservative | Conservative | Labour Co-op |
| Birmingham Duddeston | Coalition NDP | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour Co-op |
| Birmingham Edgbaston | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Birmingham Erdington | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Birmingham Handsworth | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Birmingham King's Norton | Co. Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Conservative | Labour |
| Birmingham Ladywood | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Birmingham Moseley | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Birmingham Sparkbrook | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Birmingham West | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Birmingham Yardley | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Coventry | Co. Conservative | Conservative | Labour | Conservative | Labour | Conservative | Conservative | N/A |
| Coventry East | | | | | | | | Labour |
| Coventry West | | | | | | | | Labour |
| Nuneaton | Co. Conservative | Conservative | Liberal | Conservative | Labour | Conservative | Labour | Labour |
| Rugby | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Independent |
| Solihull | | | | | | | | Conservative |
| Sutton Coldfield | | | | | | | | Conservative |
| Tamworth | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | N/A |
| Warwick and Leamington | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

## East Midlands (42)
### Derbyshire (10)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Belper | Liberal | Liberal | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Chesterfield | Liberal | Liberal | Liberal | Liberal | Labour | Conservative | Labour | Labour |
| Clay Cross | Coalition Liberal | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Derby (Two members) | Labour | Labour | Labour | Labour | Labour | National Labour | National Labour | Labour |
| Derby (Two members) | Conservative | Liberal | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Derbyshire North East | Liberal | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Derbyshire South | Coalition Liberal | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Derbyshire West | Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| High Peak | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Ilkeston | Coalition Liberal | Labour | Labour | Labour | Labour | National Labour | Labour | Labour |

### Nottinghamshire (9)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Bassetlaw | Co. Conservative | Conservative | Conservative | Conservative | Labour | National Labour | Labour | Labour |
| Broxtowe | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Mansfield | Labour | Liberal | Labour | Labour | Labour | Labour | Labour | Labour |
| Newark | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Nottingham Central | Co. Conservative | Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |
| Nottingham East | Co. Conservative | Conservative | Liberal | Conservative | Liberal | Conservative | Conservative | Labour |
| Nottingham South | Co. Conservative | Conservative | Conservative | Conservative | Labour | National Labour | National Labour | Labour Co-op |
| Nottingham West | Labour | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Rushcliffe | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |

### Leicestershire (7)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Bosworth | Coalition Liberal | Conservative | Liberal | Conservative | Liberal | Liberal National | Liberal National | Labour |
| Harborough | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |
| Leicester East | Coalition Liberal | National Liberal | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Leicester South | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |
| Leicester West | Coalition NDP | Labour | Labour | Labour | Labour | Liberal | National Labour | Labour |
| Loughborough | Coalition Liberal | National Liberal | Liberal | Conservative | Labour | Conservative | Conservative | Labour |
| Melton | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Lincolnshire and Rutland (9)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Brigg | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Labour | Labour |
| Gainsborough | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Grantham | Co. Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Independent |
| Grimsby | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Holland with Boston | Labour | Labour | Labour | Conservative | Liberal | Liberal National | Liberal National | Liberal National |
| Horncastle | Co. Conservative | Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Lincoln | Co. Conservative | Conservative | Conservative | Labour | Labour | Conservative | Conservative | Labour |
| Louth | Co. Conservative | Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Rutland and Stamford | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Northamptonshire (5)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Daventry | Co. Conservative | Conservative | Conservative | Conservative | Speaker (Conservative) | Speaker (Conservative) | Speaker (Conservative) | Conservative |
| Kettering | Co-operative | Conservative | Co-operative | Conservative | Labour Co-op | Conservative | Conservative | Labour |
| Northampton | Coalition Liberal | National Liberal | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Peterborough | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour Co-op |
| Wellingborough | Labour | National Liberal | Labour | Labour | Labour | Conservative | Conservative | Labour |

## North West (83; 85 from 1945)
### Cumberland (5)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Carlisle | Coalition Liberal | Labour | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Cumberland North | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Liberal | Liberal |
| Penrith and Cockermouth | Speaker (Conservative) | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Whitehaven | Co. Conservative | Labour | Labour | Conservative | Labour | Conservative | Labour | Labour |
| Workington | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Westmorland (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Westmorland | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Lancashire (65; 66 in 1945)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Accrington | Co. Conservative | Labour | Liberal | Constitutionalist | Labour | Conservative | Conservative | Labour |
| Ashton-under-Lyne | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Labour | Labour |
| Barrow-in-Furness | Conservative | Conservative | Conservative | Labour | Labour | Conservative | Conservative | Labour |
| Blackburn (Two members) | Coalition Liberal | National Liberal | Liberal | Liberal | Labour | Conservative | Conservative | Labour |
| Blackburn (Two members) | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Blackpool | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | N/A |
| Blackpool North | | | | | | | | Conservative |
| Blackpool South | | | | | | | | Conservative |
| Bolton (Two members) | Labour | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Bolton (Two members) | Coalition Liberal | National Liberal | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Bootle | Co. Conservative | Liberal | Liberal | Conservative | Labour | Conservative | Conservative | Labour |
| Burnley | Labour | Labour | Labour | Labour | Labour | Liberal National | Labour | Labour |
| Bury | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Chorley | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Clitheroe | Labour | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Darwen | Co. Conservative | Conservative | Liberal | Conservative | Liberal | Liberal | Conservative | Conservative |
| Eccles | Co. Conservative | Labour | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Farnworth | Conservative | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Fylde | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Heywood and Radcliffe | Coalition Liberal | National Liberal | Liberal | Constitutionalist | Liberal | Conservative | Conservative | Labour |
| Ince | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Lancaster | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Leigh | Liberal | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Liverpool East Toxteth | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Liverpool Edge Hill | Co. Conservative | Conservative | Labour | Labour | Labour | Conservative | Conservative | Labour |
| Liverpool Everton | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Labour | Labour |
| Liverpool Exchange | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Liverpool Fairfield | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Liverpool Kirkdale | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Liverpool Scotland | Irish Nationalist | Irish Nationalist | Irish Nationalist | Irish Nationalist | Irish Nationalist | Labour | Labour | Labour |
| Liverpool Walton | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Liverpool Wavertree | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Liverpool West Derby | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Liverpool West Toxteth | Co. Conservative | Conservative | Conservative | Labour | Labour | Conservative | Labour | Labour |
| Lonsdale | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Manchester Ardwick | Co. Conservative | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Manchester Blackley | Conservative | Conservative | Liberal | Conservative | Liberal | Conservative | Conservative | Labour |
| Manchester Clayton | Conservative | Conservative | Labour | Labour | Labour | Conservative | Labour | Labour |
| Manchester Exchange | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |
| Manchester Gorton | Coalition Labour | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Manchester Hulme | Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Manchester Moss Side | Conservative | Conservative | Labour | Conservative | Conservative | Conservative | Conservative | Labour |
| Manchester Platting | Labour | Labour | Liberal | Labour | Labour | Conservative | Labour | Labour |
| Manchester Rusholme | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |
| Manchester Withington | Conservative | Conservative | Liberal | Conservative | Liberal | Conservative | Conservative | Conservative |
| Middleton and Prestwich | Coalition Liberal | National Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Mossley | Coalition Liberal | Independent | Independent | Independent | Labour Co-op | Independent | National | Labour Co-op |
| Nelson and Colne | Labour | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Newton | Labour | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Oldham (Two members) | Coalition Liberal | National Liberal | Liberal | Liberal | Labour | Conservative | Liberal National | Labour |
| Oldham (Two members) | Co. Conservative | Labour | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Ormskirk | Labour | Conservative | Conservative | Conservative | Labour | National Labour | National Labour | Labour |
| Preston (Two members) | Co. Conservative | Liberal | Liberal | Conservative | Labour | Conservative | Conservative | Labour |
| Preston (Two members) | Labour | Labour | Labour | Labour | Liberal then Labour | Conservative | Conservative | Labour |
| Rochdale | Co. Conservative | Labour | Liberal | Labour | Labour | Conservative | Labour | Labour |
| Rossendale | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Royton | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| St Helens | Labour | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Salford North | Labour | Labour | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Salford South | Co. Conservative | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Salford West | Conservative | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Southport | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Stretford | Coalition Liberal | National Liberal | Liberal | Constitutionalist | Independent | Conservative | Conservative | Labour |
| Warrington | Co. Conservative | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Waterloo | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Westhoughton | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Widnes | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Wigan | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Cheshire (14; 15 in 1945)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Altrincham | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | N/A |
| Altrincham and Sale | | | | | | | | Conservative |
| Bucklow | | | | | | | | Conservative |
| Birkenhead East | Co. Conservative | Liberal | Liberal | Conservative | Liberal | Liberal | Liberal | Labour |
| Birkenhead West | Co. Conservative | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Chester | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Crewe | Coalition Liberal | Labour | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Eddisbury | Co. Conservative | Conservative | Conservative | Conservative | Liberal | Liberal National | Liberal National | Liberal National |
| Knutsford | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Macclesfield | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Northwich | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Stalybridge and Hyde | Conservative | Conservative | Liberal | Conservative | Labour | Conservative | Conservative | Labour |
| Stockport (Two members) | Coalition Labour | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Conservative |
| Stockport (Two members) | Coalition Liberal | National Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Wallasey | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Wirral | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |

## North East (28)
### County Durham (18)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Barnard Castle | Labour | Conservative | Labour | Conservative | Labour | Conservative | Labour | Labour |
| Bishop Auckland | Labour | Labour | Labour | Labour | Labour | Liberal National | Labour | Labour |
| Blaydon | Coalition Liberal | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Chester-le-Street | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Consett | Liberal | Labour | Labour | Labour | Labour | Liberal National | Labour | Labour |
| Darlington | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Durham | Co. Conservative | Labour | Labour | Labour | Labour | Liberal | Labour | Labour |
| Gateshead | Co. Conservative | Labour | Liberal | Labour | Labour | Liberal National | Liberal National | Labour |
| The Hartlepools | Conservative | Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |
| Houghton-le-Spring | Labour | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Jarrow | Coalition Liberal | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Seaham | Liberal | Labour | Labour | Labour | Labour | National Labour | Labour | Labour |
| Sedgefield | Co. Conservative | Labour | Conservative | Conservative | Labour | Conservative | Labour | Labour |
| South Shields | Coalition Liberal | Liberal | Liberal | Liberal | Labour | Liberal | Labour | Labour |
| Spennymoor | Liberal | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Stockton-on-Tees | Coalition Liberal | National Liberal | Liberal | Conservative | Labour | Conservative | Conservative | Labour |
| Sunderland (Two members) | Coalition Liberal | Conservative | Conservative | Conservative | Labour | Conservative | Liberal National | Labour |
| Sunderland (Two members) | Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |

### Northumberland (10)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Berwick-upon-Tweed | Liberal | National Liberal | Conservative | Conservative | Conservative | Conservative | Liberal | Conservative |
| Hexham | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Morpeth | Labour | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Newcastle upon Tyne Central | Co. Conservative | Labour | Labour | Labour | Labour | Conservative | Conservative | Labour |
| Newcastle upon Tyne East | Coalition Liberal | Labour | Liberal | Labour | Liberal | Liberal National | Liberal National | Labour |
| Newcastle upon Tyne North | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Newcastle upon Tyne West | Coalition Liberal | Labour | Liberal | Labour | Labour | Conservative | Conservative | Labour |
| Tynemouth | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Wallsend | Coalition NDP | Labour | Labour | Labour | Labour | Conservative | Conservative | Labour |
| Wansbeck | Coalition Liberal | Labour | Labour | Labour | Labour | Conservative | Conservative | Labour |

## Yorkshire (57)
### York (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| York | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |

### East Riding (7)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Buckrose | Coalition Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Liberal |
| Holderness | Co. Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Howdenshire | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Kingston upon Hull Central | Co. Conservative | Liberal | Liberal | Liberal | Labour | Conservative | Labour | Labour |
| Kingston upon Hull East | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Labour | Labour |
| Kingston upon Hull North West | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Kingston upon Hull South West | Liberal | Liberal | Liberal | Conservative | Labour | Conservative | Conservative | Labour |

### North Riding (6)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Cleveland | Co. Conservative | Conservative | Liberal | Conservative | Labour | Conservative | Conservative | Labour |
| Middlesbrough East | Liberal | Labour | Liberal | Labour | Labour | Liberal | Labour | Labour |
| Middlesbrough West | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal | Labour |
| Richmond (Yorks) | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Scarborough and Whitby | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Thirsk and Malton | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### West Riding (43)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Barkston Ash | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Barnsley | Coalition Liberal | Labour | Labour | Labour | Labour | Liberal National | Labour | Labour |
| Batley and Morley | Coalition Liberal | Labour | Labour | Liberal | Labour | Conservative | Labour | Labour |
| Bradford Central | Co. Conservative | Labour | Labour | Conservative | Labour | Conservative | Labour | Labour |
| Bradford East | Coalition NDP | Labour | Labour | Liberal | Labour | Conservative | Conservative | Labour |
| Bradford North | Co. Conservative | Conservative | Liberal | Conservative | Labour | Conservative | Conservative | Labour |
| Bradford South | Co. Conservative | Liberal | Liberal | Co-operative | Labour Co-op | Liberal | Liberal | Labour Co-op |
| Colne Valley | Coalition Liberal | Labour | Labour | Labour | Labour | Liberal | Labour | Labour |
| Dewsbury | Co. Conservative | Labour | Liberal | Labour | Labour | Liberal | Labour | Labour |
| Doncaster | Coalition Liberal | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Don Valley | Coalition NDP | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Elland | Co. Conservative | Labour | Liberal | Labour | Labour | Conservative | Conservative | Labour |
| Halifax | Coalition Liberal | Liberal | Liberal | Liberal | Labour | Conservative | Conservative | Labour |
| Hemsworth | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Huddersfield | Coalition Liberal | Liberal | Labour | Labour | Labour | Liberal National | Liberal National | Labour |
| Keighley | Co. Conservative | Labour | Liberal | Labour | Labour | Conservative | Labour | Labour |
| Leeds Central | Coalition Liberal | Conservative | Conservative | Conservative | Labour | National Labour | National Labour | Labour |
| Leeds North | Coalition Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Leeds North East | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Leeds South | Coalition Liberal | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Leeds South East | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Leeds West | Coalition Liberal | National Liberal | Labour | Labour | Labour | Conservative | Conservative | Labour |
| Normanton | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Penistone | Liberal | Liberal | Liberal | Labour | Labour | Conservative | Labour | Labour |
| Pontefract | Coalition Liberal | Labour | Labour | Conservative | Labour | Conservative | Labour | Labour |
| Pudsey and Otley | Coalition Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Ripon | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Rotherham | Conservative | Conservative | Labour | Labour | Labour | Conservative | Labour | Labour |
| Rother Valley | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Rothwell | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Sheffield Attercliffe | Coalition Liberal | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Sheffield, Brightside | Coalition Liberal | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Sheffield, Central | Co. Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Sheffield, Ecclesall | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Sheffield, Hallam | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Sheffield, Hillsborough | Coalition Liberal | Co-operative | Co-operative | Co-operative | Labour Co-op | Conservative | Labour Co-op | Labour Co-op |
| Sheffield, Park | Coalition Liberal | National Liberal | Conservative | Conservative | Labour | Conservative | Labour | Labour |
| Shipley | Coalition Liberal | National Liberal | Labour | Labour | Labour | Conservative | Labour | Labour |
| Skipton | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Sowerby | NADSS | Conservative | Liberal | Conservative | Labour | Conservative | Conservative | Labour |
| Spen Valley | Coalition Liberal | Liberal | Liberal | Liberal | Liberal | Liberal National | Liberal National | Labour |
| Wakefield | Co. Conservative | Conservative | Labour | Conservative | Labour | Conservative | Labour | Labour |
| Wentworth | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

## England non-geographic (7)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Cambridge University (Two members) | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Cambridge University (Two members) | Co. Conservative | Independent Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Independent |
| Combined English Universities (Two members) | Coalition Liberal | National Liberal | Liberal | Liberal | Independent | Independent | Independent | Independent |
| Combined English Universities (Two members) | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Independent |
| Oxford University | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Independent |
| Oxford University | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Independent | Independent |
| London University | Co. Conservative | Conservative | Conservative | Independent | Independent | Nat. Independent | Nat. Independent | Independent |

## Wales (36)
### Anglesey (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Anglesey | Independent Labour | Independent Labour | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal |

### Caernarvonshire (2)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Caernarvon District of Boroughs | Coalition Liberal | National Liberal | Liberal | Liberal | Liberal | Liberal | Liberal | Conservative |
| Carnarvonshire | Coalition Liberal | Labour | Liberal | Liberal | Liberal | Liberal | Liberal | Labour |

### Denbighshire (2)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Denbigh | Coalition Liberal | National Liberal | Liberal | Liberal | Liberal | Liberal National | Liberal National | Liberal National |
| Wrexham | Coalition Liberal | Labour | Labour | Liberal | Labour | Liberal | Labour | Labour |

### Flintshire (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Flint | Coalition Liberal | National Liberal | Liberal | Conservative | Liberal | Liberal National | Conservative | Conservative |

### Merionethshire (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Merioneth | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal |

### Montgomeryshire (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Montgomery | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal National | Liberal National | Liberal |

### Breconshire and Radnorshire (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Brecon and Radnor | Coalition Liberal | National Liberal | Liberal | Conservative | Labour | Conservative | National | Labour |

### Cardiganshire (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Cardigan | Coalition Liberal | National Liberal | Independent Liberal | Liberal | Liberal | Liberal | Liberal | Liberal |

### Carmarthenshire (2)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Carmarthen | Coalition Liberal | National Liberal | Liberal | Liberal | Labour | Liberal | Labour | Liberal |
| Llanelly | Coalition Liberal | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Pembrokeshire (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Pembroke | Coalition Liberal | National Liberal | Liberal | Conservative | Liberal | Liberal | Liberal | Liberal |

### Glamorgan (16)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Aberavon | Coalition Liberal | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Aberdare | Coalition NDP | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Llandaff and Barry | Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Caerphilly | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Cardiff Central | Conservative | Conservative | Conservative | Conservative | Labour | National Labour | National Labour | Labour |
| Cardiff East | Liberal | Conservative | Liberal | Conservative | Labour | Conservative | Conservative | Labour |
| Cardiff South | Conservative | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Gower | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Merthyr | Coalition Liberal | Labour | Labour | Labour | Labour | Ind. Labour Party | Labour | Labour |
| Neath | Coalition Liberal | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Ogmore | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Pontypridd | Coalition Liberal | National Liberal | Labour | Labour | Labour | Labour | Labour | Labour |
| Rhondda East | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Rhondda West | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Swansea East | Coalition Liberal | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Swansea West | Coalition Liberal | National Liberal | Labour | Liberal | Labour | Liberal National | Liberal National | Labour |

### Monmouthshire (6)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Abertillery | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Bedwellty | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Ebbw Vale | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Monmouth | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Newport | Coalition Liberal | Conservative | Conservative | Conservative | Labour | Conservative | Conservative | Labour |
| Pontypool | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Non-geographic (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| University of Wales | Coalition Liberal | National Liberal | Christian Pacifist | Liberal | Liberal | Liberal | Liberal | Liberal |

## Scotland (70)
### Orkney and Shetland (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Orkney and Shetland | Coalition Liberal | Liberal | Liberal | Liberal | Liberal | Liberal | Conservative | Conservative |

### Caithness and Sutherland (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Caithness and Sutherland | Coalition Liberal | National Liberal | Liberal | Liberal | Liberal | Liberal | Liberal | Conservative |

### Inverness-shire and Ross and Cromarty (3)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Inverness | Coalition Liberal | National Liberal | Liberal | Liberal | Liberal | Liberal National | Liberal National | Ind. Liberal National |
| Ross and Cromarty | Coalition Liberal | National Liberal | Liberal | Liberal | Liberal | Liberal National | Liberal National | Ind. Liberal National |
| Western Isles | Liberal | National Liberal | Liberal | Liberal | Liberal | Liberal National | Labour | Labour |

### Banffshire (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Banff | Coalition Liberal | National Liberal | Liberal | Conservative | Liberal | Liberal | Conservative | Conservative |

### Moray and Nairnshire (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Moray and Nairn | Coalition Liberal | National Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Aberdeenshire and Kincardineshire (5)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Aberdeen North | Labour | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Aberdeen South | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Aberdeenshire Central | Co. Conservative | Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Aberdeenshire East | Coalition Liberal | Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Aberdeenshire West and Kincardine | Coalition Liberal | Liberal | Conservative | Conservative | Liberal | Conservative | Conservative | Conservative |

### Forfarshire (4)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Dundee (Two members) | Labour | Labour | Labour | Labour | Labour | Liberal | Liberal | Labour |
| Dundee (Two members) | Coalition Liberal | Scottish Prohibition | Scottish Prohibition | Scottish Prohibition | Scottish Prohibition | Conservative | Conservative | Labour |
| Forfar | Conservative | Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |
| Montrose District of Burghs | Coalition Liberal | National Liberal | Liberal | Liberal | Liberal | Liberal National | Liberal National | Liberal National |

### Argyll (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Argyll | Coalition Liberal | National Liberal | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |

### Perthshire and Kinross-shire (2)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Kinross and Western Perthshire | Liberal | National Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Perth | Coalition Liberal | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative |

### Stirlingshire and Clackmannanshire (3)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Stirling and Falkirk District of Burghs | Liberal | Labour | Liberal | Labour | Labour | Conservative | Labour | Labour |
| Clackmannan and Eastern Stirlingshire | Co. Conservative | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Stirlingshire West | Co. Conservative | Labour | Labour | Conservative | Labour | Conservative | Labour | Labour |

### Fife (4)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Dunfermline District of Burghs | Coalition Liberal | Labour | Labour | Labour | Labour | Liberal National | Labour | Labour |
| Fife East | Conservative | Liberal | Liberal | Conservative | Liberal | Liberal National | Liberal National | Liberal National |
| Fife West | Labour | Labour | Labour | Labour | Labour | Conservative | Communist | Communist |
| Kirkcaldy District of Burghs | Coalition Liberal | National Liberal | Labour | Labour | Labour | Conservative | Labour | Labour |

### Dunbartonshire (2)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Dumbarton District of Burghs | Coalition Liberal | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Dunbartonshire | Co. Conservative | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |

### Renfrewshire (4)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Greenock | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal National | Liberal National | Labour |
| Paisley | Liberal | Liberal | Liberal | Labour | Labour | Liberal | Liberal | Labour |
| Renfrewshire East | Coalition Liberal | Labour | Labour | Conservative | Conservative | Conservative | Conservative | Conservative |
| Renfrewshire West | Coalition Liberal | Labour | Labour | Conservative | Labour | Conservative | Conservative | Labour |

### Ayrshire and Bute (4)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Ayr District of Burghs | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Ayrshire North and Bute | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Ayrshire South | Labour | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Kilmarnock | Coalition Liberal | National Liberal | Labour | Conservative | Labour | National Labour | National Labour | Labour |

### Lanarkshire (22)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Bothwell | Co. Conservative | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Coatbridge | Co. Conservative | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Glasgow Bridgeton | Coalition Liberal | Labour | Labour | Labour | Labour | Ind. Labour Party | Ind. Labour Party | Ind. Labour Party |
| Glasgow Camlachie | Co. Conservative | Labour | Labour | Labour | Labour | Conservative | Ind. Labour Party | Ind. Labour Party |
| Glasgow Cathcart | Coalition Liberal | Labour | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Glasgow Central | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Glasgow Gorbals | Coalition Labour | Labour | Labour | Labour | Labour | Ind. Labour Party | Ind. Labour Party | Labour |
| Glasgow Govan | Labour | Labour | Labour | Labour | Independent Labour | Labour | Labour | Labour |
| Glasgow Hillhead | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Glasgow Kelvingrove | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Labour |
| Glasgow Maryhill | Co. Conservative | Labour | Labour | Conservative | Labour | Conservative | Labour | Labour |
| Glasgow Partick | Coalition Liberal | National Liberal | Co-operative | Conservative | Labour | Conservative | Conservative | Conservative |
| Glasgow Pollok | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Glasgow St. Rollox | Co. Conservative | Labour | Labour | Labour | Labour | Labour Co-op | Labour Co-op | Labour Co-op |
| Glasgow Shettleston | Co. Conservative | Labour | Labour | Labour | Labour | Ind. Labour Party | Ind. Labour Party | Ind. Labour Party |
| Glasgow Springburn | Co. Conservative | Labour | Labour | Labour | Labour | Conservative | Labour | Labour Co-op |
| Glasgow Tradeston | Co. Conservative | Co-operative | Co-operative | Co-operative | Labour Co-op | Conservative | Labour Co-op | Labour Co-op |
| Hamilton | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Lanark | Co. Conservative | Conservative | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Lanarkshire North | Co. Conservative | Labour | Labour | Conservative | Labour | Conservative | Conservative | Labour |
| Motherwell | Co. Conservative | Communist | Conservative | Labour | Labour | Conservative | Labour | Labour |
| Rutherglen | Coalition Liberal | Labour | Labour | Labour | Labour | Conservative | Conservative | Labour |

### Linlithgowshire (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Linlithgow | Co. Conservative | Labour | Labour | Conservative | Labour | Conservative | Labour | Labour |

### Midlothian and Peeblesshire (8)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Edinburgh Central | Labour | Labour | Labour | Labour | Labour | Conservative | Conservative | Labour |
| Edinburgh East | Liberal | Liberal | Liberal | Labour | Labour | Liberal | Labour | Labour |
| Edinburgh North | Co. Conservative | Conservative | Liberal | Conservative | Conservative | Conservative | Conservative | Labour |
| Edinburgh South | Co. Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Edinburgh West | Co. Conservative | Liberal | Liberal | Conservative | Labour | Conservative | Conservative | Conservative |
| Leith | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal National | Liberal National | Labour |
| Midlothian North | Co. Conservative | Conservative | Labour | Conservative | Conservative | Conservative | Conservative | Conservative |
| Midlothian South and Peebles | Liberal | Labour | Labour | Labour | Labour | Conservative | Conservative | Labour |

### Dumfriesshire (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Dumfries | Co. Conservative | Liberal | Liberal | Conservative | Liberal | Liberal | Liberal National | Liberal National |

### Kirkcudbrightshire and Wigtownshire (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Galloway | Coalition Liberal | Liberal | Liberal | Conservative | Liberal | Conservative | Conservative | Ind. Conservative |

### Roxburghshire and Selkirkshire (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Roxburgh and Selkirk | Coalition Liberal | National Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Berwickshire and Haddingtonshire (1)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Berwick and Haddington | Coalition Liberal | National Liberal | Labour | Conservative | Labour | Conservative | Conservative | Labour |

### Non-geographic (3)

| Constituency | 1918 | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Combined Scottish Universities (Three members) | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | National |
| Combined Scottish Universities (Three members) | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal National | Independent |
| Combined Scottish Universities (Three members) | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

## Northern Ireland (13 - from 1922)

| Constituency | 1922 | 1923 | 1924 | 1929 | 1931 | 1935 | 1945 |
| Antrim (Two members) | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist |
| Antrim (Two members) | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist |
| Armagh | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist |
| Belfast East | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist |
| Belfast North | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist |
| Belfast South | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist |
| Belfast West | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Independent Labour |
| Down (Two members) | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Independent Unionist |
| Down (Two members) | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist |
| Fermanagh and Tyrone (Two members) | Nationalist | Nationalist | Ulster Unionist | Nationalist | Nationalist | Nationalist | Nationalist |
| Fermanagh and Tyrone (Two members) | Nationalist | Nationalist | Ulster Unionist | Nationalist | Nationalist | Nationalist | Nationalist |
| Londonderry | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist |
| Queen's University of Belfast | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist |