# List of United Kingdom Parliament constituencies (1950–1974) by region

This is a list of all constituencies that were in existence at the 1950, 1951, 1955, 1959, 1964, 1966 and 1970 general elections, showing the winning party and broken down by region and county.

## South West (43)
### Cornwall (5)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Bodmin | Conservative | Conservative | Conservative | Conservative | Liberal | Liberal | Conservative |
| Cornwall North | Conservative | Conservative | Conservative | Conservative | Conservative | Liberal | Liberal |
| Falmouth and Camborne | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |
| St Ives | National Liberal | National Liberal | National Liberal | National Liberal | National Liberal | National Liberal | Conservative |
| Truro | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Devon (10)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Devon North | Conservative | Conservative | Conservative | Liberal | Liberal | Liberal | Liberal |
| Exeter | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Honiton | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Plymouth Devonport | Labour | Labour | Conservative | Conservative | Conservative | Conservative | Conservative |
| Plymouth Sutton | Labour | Conservative | Conservative | Conservative | Conservative | Labour | Labour |
| Tavistock | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Tiverton | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Torquay | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Torrington | National Liberal | National Liberal | National Liberal | Conservative | Conservative | Conservative | Conservative |
| Totnes | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Somerset (7)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Bath | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Bridgwater | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Somerset North | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Taunton | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Wells | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Weston-super-Mare | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Yeovil | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Dorset (4)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Dorset North | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Dorset South | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Dorset West | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Poole | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Gloucestershire (12)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Bristol Central | Labour | Labour | Labour | Labour | Labour Co-op | Labour Co-op | Labour Co-op |
| Bristol North East | Labour Co-op | Labour Co-op | Labour Co-op | National Liberal | National Liberal | Labour | Conservative |
| Bristol North West | Conservative | Conservative | Labour | Conservative | Conservative | Labour | Conservative |
| Bristol South | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Bristol South East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Bristol West | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Cheltenham | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Cirencester and Tewkesbury | Conservative | Speaker (Con) | Speaker (Con) | Conservative | Conservative | Conservative | Conservative |
| Gloucester | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |
| Gloucestershire South | Labour | Labour | Conservative | Conservative | Conservative | Conservative | Conservative |
| Gloucestershire West | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Stroud and Thornbury / Stroud (from 1955) | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Wiltshire (5)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Chippenham | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Devizes | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Salisbury | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Swindon | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Westbury | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

## South East (including London) (147 to 1955; 150 from 1955)
### Oxfordshire (3)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Banbury | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Henley | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Oxford | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |

### Buckinghamshire (5)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Aylesbury | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Buckingham | Labour | Conservative | Conservative | Conservative | Labour | Labour | Conservative |
| Buckinghamshire South | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Eton and Slough | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Wycombe | Labour | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Berkshire (6 then 5)

| Constituency | Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Abingdon | Abingdon | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Newbury | Newbury | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Reading North | Reading (from 1955) | Labour | Conservative | Labour | Conservative | Conservative | Labour | Conservative |
| Reading South | Reading (from 1955) | Labour | Labour | Labour | Conservative | Conservative | Labour | Conservative |
| Windsor | Windsor | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Wokingham | Wokingham | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Hampshire (13 then 14)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Aldershot | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Basingstoke | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Bournemouth East and Christchurch | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Bournemouth West | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Eastleigh | N/A | N/A | Conservative | Conservative | Conservative | Conservative | Conservative |
| Gosport and Fareham | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| New Forest | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Petersfield | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Portsmouth Langstone | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Portsmouth South | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Portsmouth West | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Labour |
| Southampton Itchen | Labour | Labour | Labour | Labour | Labour | Speaker (Lab) | Speaker (Lab) |
| Southampton Test | Labour | Labour | Conservative | Conservative | Conservative | Labour | Conservative |
| Winchester | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Isle of Wight (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Isle of Wight | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Surrey (19 then 20)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 | |
| Carshalton | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| Chertsey | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Croydon East / Croydon North East (from 1955) | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| Croydon North / Croydon North West (from 1955) | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| Croydon West / Croydon South (from 1955) | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Transferred to Greater London 1965 |
| Dorking | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Epsom | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Esher | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Farnham | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Guildford | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Kingston upon Thames | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| Merton and Morden | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| Mitcham | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| Reigate | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Richmond (Surrey) | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| Surbiton | N/A | N/A | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| Surrey East | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Sutton and Cheam | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| Wimbledon | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| Woking | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |

### Sussex (11 then 12)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Arundel and Shoreham | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Brighton Kemptown | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Conservative |
| Brighton Pavilion | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Chichester | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Eastbourne | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| East Grinstead | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Hastings | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Horsham | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Hove | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Lewes | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Rye | N/A | N/A | Conservative | Conservative | Conservative | Conservative | Conservative |
| Worthing | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Kent (18 then 19)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 | |
| Ashford | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Beckenham | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| Bexley | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| Bromley | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| Canterbury | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Chislehurst | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Transferred to Greater London 1965 |
| Dartford | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Conservative | |
| Dover | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Conservative | |
| Erith and Crayford | N/A | N/A | Labour Co-op | Labour Co-op | Labour Co-op | Labour | Labour | Transferred to Greater London 1965 |
| Faversham | Labour | Labour | Labour | Labour | Labour | Labour | Conservative | |
| Folkestone and Hythe | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Gillingham | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Gravesend | Labour | Labour | Conservative | Conservative | Labour | Labour | Conservative | |
| Isle of Thanet | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Maidstone | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Orpington | Conservative | Conservative | Conservative | Conservative | Liberal | Liberal | Conservative | Transferred to Greater London 1965 |
| Rochester and Chatham | Labour | Labour | Labour | Conservative | Labour | Labour | Conservative | |
| Sevenoaks | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Tonbridge | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |

### Middlesex (28 then 29)

With the exception of Spelthorne, which became part of Surrey, all of these constituencies became part of the county of Greater London when it was formed and Middlesex was abolished in 1965.
| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Acton | Labour | Labour | Labour | Conservative | Labour | Labour | Labour |
| Brentford and Chiswick | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Labour |
| Ealing North | Labour Co-op | Labour Co-op | Conservative | Conservative | Labour | Labour | Labour |
| Ealing South | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Edmonton | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Enfield East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Enfield West | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Feltham | N/A | N/A | Labour | Labour | Labour | Labour | Labour |
| Finchley | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Harrow Central | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Harrow East | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Harrow West | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Hayes and Harlington | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Hendon North | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Hendon South | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Heston and Isleworth | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Hornsey | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Ruislip Northwood | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Southall | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Southgate | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Spelthorne | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Tottenham | Labour Co-op | Labour Co-op | Labour Co-op | Labour | Labour | Labour | Labour |
| Twickenham | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Uxbridge | Labour Co-op | Labour Co-op | Labour Co-op | Conservative | Conservative | Labour | Conservative |
| Wembley North | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Wembley South | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Willesden East | Labour | Labour | Conservative | Conservative | Labour | Labour | Labour |
| Willesden West | Labour | Labour | Labour | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op |
| Wood Green | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op |

### County of London (43 then 42)

The county of London was abolished in 1965 and became part of the much larger county of Greater London.
| Constituency | Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Battersea North | Battersea North | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Battersea South | Battersea South | Labour Co-op | Conservative | Conservative | Conservative | Labour | Labour | Labour |
| Bermondsey | Bermondsey | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Bethnal Green | Bethnal Green | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op |
| Brixton | Brixton | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Chelsea | Chelsea | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Clapham | Clapham | Labour | Labour | Labour | Conservative | Labour | Labour | Conservative |
| Deptford | Deptford | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Dulwich | Dulwich | Labour | Conservative | Conservative | Conservative | Labour | Labour | Labour |
| Fulham East | Fulham (from 1955) | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Fulham West | Fulham (from 1955) | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Greenwich | Greenwich | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Hackney North and Stoke Newington | Hackney North and Stoke Newington | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Hackney South / Hackney Central (from 1955) | Hackney South / Hackney Central (from 1955) | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Hammersmith North | Hammersmith North | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Hammersmith South / Barons Court (from 1955) | Hammersmith South / Barons Court (from 1955) | Labour Co-op | Labour Co-op | Labour Co-op | Conservative | Labour | Labour | Labour |
| Hampstead | Hampstead | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Holborn and St Pancras South | Holborn and St Pancras South | Labour | Labour | Labour | Conservative | Labour | Labour | Labour |
| Islington East | Islington East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Islington North | Islington North | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Islington South West | Islington South West | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Kensington North | Kensington North | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Kensington South | Kensington South | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Lewisham North | Lewisham North | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Labour |
| Lewisham South | Lewisham South | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Lewisham West | Lewisham West | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Cities of London and Westminster | Cities of London and Westminster | Conservative | Conservative | Conservative | Conservative | Speaker (Con) | Conservative | Conservative |
| Norwood | Norwood | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Labour |
| Paddington North | Paddington North | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Paddington South | Paddington South | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Peckham | Peckham | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Poplar | Poplar | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Putney | Putney | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Labour |
| St Marylebone | St Marylebone | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| St Pancras North | St Pancras North | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Shoreditch and Finsbury | Shoreditch and Finsbury | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Southwark | Southwark | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Stepney | Stepney | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Streatham | Streatham | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Vauxhall | Vauxhall | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Wandsworth Central | Wandsworth Central | Labour | Labour | Conservative | Conservative | Labour | Labour | Labour |
| Woolwich East | Woolwich East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Woolwich West | Woolwich West | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Labour |
See https://commons.wikimedia.org/wiki/Category:Locator_maps_of_former_parliamentary_constituencies_of_England_1948

## East Anglia (52 to 1955; 55 from 1955)
### Bedfordshire (4)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Bedford | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Bedfordshire Mid | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Bedfordshire South | Labour | National Liberal | National Liberal | National Liberal | Conservative | Labour | Conservative |
| Luton | National Liberal | National Liberal | National Liberal | National Liberal | Labour | Labour | Conservative |

### Hertfordshire (7 then 8)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 | |
| Barnet | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| Hemel Hempstead | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Hertford | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Hertfordshire East | N/A | N/A | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Hertfordshire South West | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Hitchin | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Labour | |
| St Albans | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Watford | Labour | Labour | Conservative | Conservative | Labour | Labour | Labour | |

### Huntingdonshire (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Huntingdonshire | National Liberal | National Liberal | National Liberal | National Liberal | National Liberal | National Liberal | Conservative |

### Cambridgeshire and Isle of Ely (3)

The separate administrative counties of Cambridgeshire and Isle of Ely were combined in 1965.
| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Cambridge | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Cambridgeshire | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Isle of Ely | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Norfolk (8)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| King's Lynn | Labour | Conservative | Conservative | Conservative | Labour | Labour | Conservative |
| Norfolk Central | National Liberal | National Liberal | National Liberal | National Liberal | Conservative | Conservative | Conservative |
| Norfolk North | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |
| Norfolk South | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Norfolk South West | Labour | Conservative | Labour | Labour | Conservative | Conservative | Conservative |
| Norwich North | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Norwich South | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Conservative |
| Yarmouth | Labour | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |

### Suffolk (5)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Bury St Edmunds | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Eye | Liberal | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Ipswich | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |
| Lowestoft | Labour | Labour | Labour | Conservative | Conservative | Conservative | Conservative |
| Sudbury and Woodbridge | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Essex (24 then 26)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 | |
| Barking | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Transferred to Greater London 1965 |
| Billericay | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative | |
| Chelmsford | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Chigwell | N/A | N/A | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Colchester | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Dagenham | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Transferred to Greater London 1965 |
| East Ham North | Labour Co-op | Labour Co-op | Labour Co-op | Labour | Labour | Labour | Labour | Transferred to Greater London 1965 |
| East Ham South | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Transferred to Greater London 1965 |
| Epping | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Conservative | Part transferred to Greater London 1965 |
| Essex South East | N/A | N/A | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Harwich | National Liberal | National Liberal | National Liberal | National Liberal | National Liberal | National Liberal | Conservative | |
| Hornchurch | Labour | Labour | Conservative | Conservative | Conservative | Labour | Conservative | Transferred to Greater London 1965 |
| Ilford North | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| Ilford South | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative | Transferred to Greater London 1965 |
| Leyton | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Transferred to Greater London 1965 |
| Maldon | Labour | Labour | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Romford | Conservative | Conservative | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour | Transferred to Greater London 1965 |
| Saffron Walden | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Southend East | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Southend West | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | |
| Thurrock | Labour | Labour | Labour | Labour | Labour | Labour | Labour | |
| Walthamstow East | Labour | Labour | Conservative | Conservative | Conservative | Labour | Conservative | Transferred to Greater London 1965 |
| Walthamstow West | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Transferred to Greater London 1965 |
| Woodford / Wanstead and Woodford (from 1964) | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Transferred to Greater London 1965 |
| West Ham North | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Transferred to Greater London 1965 |
| West Ham South | Labour | Labour | Labour | Labour | Labour | Labour | Labour | Transferred to Greater London 1965 |

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

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Belper | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |
| Bolsover | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Chesterfield | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Derby North | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Derby South | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Derbyshire North East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Derbyshire South East | Labour | Labour | Labour | Conservative | Labour | Labour | Conservative |
| Derbyshire West | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| High Peak | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Ilkeston | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Nottinghamshire (10)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Bassetlaw | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Broxtowe / Ashfield (from 1955) | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Carlton | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Mansfield | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Newark | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Nottingham Central | Labour | Labour | Conservative | Conservative | Labour | Labour | Labour |
| Nottingham East / Nottingham North (from 1955) | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Nottingham North West / Nottingham West (from 1955) | Labour | Labour | Labour | Conservative | Labour | Labour | Labour |
| Nottingham South | Labour Co-op | Labour Co-op | Conservative | Conservative | Conservative | Labour | Conservative |
| Rushcliffe | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |

### Leicestershire (8)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Bosworth | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |
| Harborough | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Leicester North East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Leicester North West | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Leicester South East | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Leicester South West | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |
| Loughborough | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Melton | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Lincolnshire and Rutland (9)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Brigg | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Gainsborough | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Grantham | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Grimsby | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Holland with Boston | National Liberal | National Liberal | National Liberal | National Liberal | National Liberal | Conservative | Conservative |
| Horncastle | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Lincoln | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Louth | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Rutland and Stamford | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Northamptonshire and Soke of Peterborough (5)

The administrative county of the Soke of Peterborough was combined with Huntingdonshire in 1965 to form Hundingdonshire and Peterborough.
| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Kettering | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Northampton | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Northamptonshire South | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Peterborough | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Wellingborough | Labour | Labour | Labour | Conservative | Labour | Labour | Conservative |

## West Midlands (52 to 1955; 54 from 1955)
### Shropshire (4)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Ludlow | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Oswestry | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Shrewsbury | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| The Wrekin | Labour | Labour | Conservative | Conservative | Conservative | Labour | Conservative |

### Staffordshire (17 then 18)

| Constituency | Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Bilston | Bilston | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op |
| Brierley Hill | Brierley Hill | Labour | Labour | Labour | Conservative | Conservative | Conservative | Conservative |
| Burton | Burton | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Cannock | Cannock | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |
| Leek | Leek | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |
| Lichfield and Tamworth | Lichfield and Tamworth | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |
| Newcastle-under-Lyme | Newcastle-under-Lyme | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Smethwick | Smethwick | Labour | Labour | Labour | Labour | Conservative | Labour | Labour |
| Stafford and Stone | Stafford and Stone | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Stoke-on-Trent Central | Stoke-on-Trent Central | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Stoke-on-Trent North | Stoke-on-Trent North | Labour | Labour | Labour Co-op | Labour Co-op | Labour Co-op | Labour | Labour |
| Stoke-on-Trent South | Stoke-on-Trent South | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Walsall | Walsall North (from 1955) | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Walsall | Walsall South (from 1955) | Labour | Labour | Conservative | Conservative | Conservative | Conservative | Conservative |
| Wednesbury | Wednesbury | Labour | Labour | Labour | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op |
| West Bromwich | West Bromwich | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Wolverhampton North East | Wolverhampton North East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Wolverhampton South West | Wolverhampton South West | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Herefordshire (2)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Hereford | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Leominster | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Worcestershire (7)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Bromsgrove | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Dudley | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Kidderminster | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Oldbury and Halesowen | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |
| Rowley Regis and Tipton | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Worcester | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Worcestershire South | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Warwickshire (22 then 23)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Birmingham All Saints | N/A | N/A | Labour | Conservative | Labour | Labour | Labour |
| Birmingham Aston | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Birmingham Edgbaston | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Birmingham Erdington | Labour | Labour | N/A | N/A | N/A | N/A | N/A |
| Birmingham Hall Green | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Birmingham Handsworth | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Birmingham King's Norton | Conservative | Conservative | N/A | N/A | N/A | N/A | N/A |
| Birmingham Ladywood | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Birmingham Northfield | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Birmingham Perry Barr | Labour | Labour | Labour | Labour | Conservative | Labour | Conservative |
| Birmingham Selly Oak | N/A | N/A | Conservative | Conservative | Conservative | Conservative | Conservative |
| Birmingham Small Heath | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour | Labour | Labour |
| Birmingham Sparkbrook | Labour | Labour | Labour | Conservative | Labour | Labour | Labour |
| Birmingham Stechford | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Birmingham Yardley | Labour | Labour | Labour | Conservative | Labour Co-op | Labour Co-op | Conservative |
| Coventry East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Coventry North | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Coventry South | Labour | Labour | Labour | Conservative | Labour | Labour | Labour |
| Meriden | N/A | N/A | Labour | Conservative | Labour | Labour | Conservative |
| Nuneaton | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Rugby | Labour | Labour | Labour | Conservative | Conservative | Labour | Labour |
| Solihull | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Stratford-on-Avon | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Sutton Coldfield | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Warwick and Leamington | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

## North West (84 to 1955; 83 from 1955)
### Cumberland (4)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Carlisle | Labour | Labour | Conservative | Conservative | Labour | Labour | Labour |
| Penrith and the Border | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Whitehaven | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Workington | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Westmorland (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Westmorland | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Lancashire (64 then 62)

| Constituency | Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Accrington | Accrington | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Ashton-under-Lyne | Ashton-under-Lyne | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Barrow-in-Furness | Barrow-in-Furness | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Blackburn East | Blackburn (from 1955) | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Blackburn West | Blackburn (from 1955) | Conservative | Conservative | Labour | Labour | Labour | Labour | Labour |
| Blackpool North | Blackpool North | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Blackpool South | Blackpool South | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Bolton East | Bolton East | Labour | Conservative | Conservative | Conservative | Labour | Labour | Conservative |
| Bolton West | Bolton West | Labour | Liberal | Liberal | Liberal | Labour | Labour | Conservative |
| Bootle | Bootle | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Burnley | Burnley | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Bury and Radcliffe | Bury and Radcliffe | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Conservative |
| Chorley | Chorley | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |
| Clitheroe | Clitheroe | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Crosby | Crosby | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Darwen | Darwen | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Droylsden | Droylsden | Labour Co-op | Labour | N/A | N/A | N/A | N/A | N/A |
| Eccles | Eccles | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Farnworth | Farnworth | Labour | Labour | Labour | Labour | Labour | Labour | Labour Co-op |
| Fylde North | Fylde North | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Fylde South | Fylde South | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Heywood and Royton | Heywood and Royton | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Labour |
| Huyton | Huyton | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Ince | Ince | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Lancaster | Lancaster | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Leigh | Leigh | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Liverpool Edge Hill | Liverpool Edge Hill | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Liverpool Exchange | Liverpool Exchange | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Liverpool Garston | Liverpool Garston | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Liverpool Kirkdale | Liverpool Kirkdale | Labour | Labour | Conservative | Conservative | Labour | Labour | Labour |
| Liverpool Scotland | Liverpool Scotland | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Liverpool Toxteth | Liverpool Toxteth | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Labour |
| Liverpool Walton | Liverpool Walton | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Labour |
| Liverpool Wavertree | Liverpool Wavertree | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Liverpool West Derby | Liverpool West Derby | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Labour |
| Manchester Ardwick | Manchester Ardwick | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Manchester Blackley | Manchester Blackley | Labour | Conservative | Conservative | Conservative | Labour | Labour | Labour |
| Manchester Cheetham | Manchester Cheetham | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Manchester Clayton / Manchester Openshaw (from 1955) | Manchester Clayton / Manchester Openshaw (from 1955) | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Manchester Exchange | Manchester Exchange | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Manchester Gorton | Manchester Gorton | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Manchester Moss Side | Manchester Moss Side | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Manchester Withington | Manchester Withington | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Manchester Wythenshawe | Manchester Wythenshawe | Conservative | Conservative | Conservative | Conservative | Labour Co-op | Labour Co-op | Labour Co-op |
| Middleton and Prestwich | Middleton and Prestwich | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Morecambe and Lonsdale | Morecambe and Lonsdale | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Nelson and Colne | Nelson and Colne | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |
| Newton | Newton | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Oldham East | Oldham East | Labour | Conservative | Conservative | Labour | Labour | Labour | Labour |
| Oldham West | Oldham West | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Ormskirk | Ormskirk | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Preston North | Preston North | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Preston South | Preston South | Labour | Labour | Conservative | Conservative | Labour | Labour | Conservative |
| Rochdale | Rochdale | Labour | Conservative | Conservative | Labour | Labour | Labour | Labour |
| Rossendale | Rossendale | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |
| St Helens | St Helens | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Salford East | Salford East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Salford West | Salford West | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Southport | Southport | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Stretford | Stretford | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Warrington | Warrington | Labour | Labour | Labour | Labour | Labour Co-op | Labour Co-op | Labour Co-op |
| Westhoughton | Westhoughton | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Widnes | Widnes | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Wigan | Wigan | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Cheshire (15 then 16)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Altrincham and Sale | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Bebington | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Birkenhead | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Cheadle | Conservative | Conservative | Conservative | Conservative | Conservative | Liberal | Conservative |
| Chester | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Crewe | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Knutsford | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Macclesfield | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Nantwich | N/A | N/A | Conservative | Conservative | Conservative | Conservative | Conservative |
| Northwich | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Runcorn | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Stalybridge and Hyde | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Stockport North | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Conservative |
| Stockport South | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Labour |
| Wallasey | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Wirral | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

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

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Bishop Auckland | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Blaydon | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Chester-le-Street | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Consett | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Darlington | Labour | Conservative | Conservative | Conservative | Labour | Labour | Labour |
| Durham | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Durham North West | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Easington | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Gateshead East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Gateshead West | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| The Hartlepools | Labour | Labour | Labour | Conservative | Labour | Labour | Labour |
| Houghton-le-Spring | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Jarrow | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Sedgefield | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| South Shields | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Stockton-on-Tees | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Sunderland North | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Sunderland South | Labour | Labour | Conservative | Conservative | Labour | Labour | Labour |

### Northumberland (10)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Berwick-upon-Tweed | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Blyth | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Hexham | Speaker (Con) | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Morpeth | Labour | Labour | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour |
| Newcastle upon Tyne Central | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Newcastle upon Tyne East | Labour | Labour | Labour | Conservative | Labour Co-op | Labour Co-op | Labour Co-op |
| Newcastle upon Tyne North | Conservative | National Liberal | National Liberal | Conservative | Conservative | Conservative | Conservative |
| Newcastle upon Tyne West | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Tynemouth | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Wallsend | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

## Yorkshire (58 to 1955; 56 from 1955)
### York (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| York | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Labour |

### East Riding (7)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Beverley / Howden (from 1955) | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Bridlington | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Goole | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Kingston upon Hull, Haltemprice / Haltemprice (from 1955) | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Kingston upon Hull Central / Kingston upon Hull West (from 1955) | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Kingston upon Hull East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Kingston upon Hull North | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Labour |

### North Riding (7)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Cleveland | Labour | Labour | Labour Co-op | Conservative | Labour | Labour | Labour |
| Harrogate | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Middlesbrough East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Middlesbrough West | Labour | Conservative | Conservative | Conservative | Labour | Labour | Conservative |
| Richmond (Yorks) | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Scarborough and Whitby | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Thirsk and Malton | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### West Riding (43 then 41)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Barkston Ash | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Barnsley | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Batley and Morley | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Bradford Central | Labour | Labour | N/A | N/A | N/A | N/A | N/A |
| Bradford East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Bradford North | Conservative | Conservative | Conservative | National Liberal | Labour | Labour | Labour |
| Bradford South | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Bradford West | N/A | N/A | Conservative | National Liberal | National Liberal | Labour Co-op | Conservative |
| Brighouse and Spenborough | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |
| Colne Valley | Labour | Labour | Labour | Labour | Labour | Liberal | Labour |
| Dearne Valley | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Dewsbury | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Don Valley | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Doncaster | Labour | Conservative | Conservative | Conservative | Labour | Labour | Labour |
| Halifax | Labour | Labour | Conservative | Conservative | Labour | Labour | Labour |
| Hemsworth | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Huddersfield East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Huddersfield West | Liberal | Liberal | Liberal | Liberal | Labour | Labour | Labour |
| Keighley | Labour | Labour | Labour | Conservative | Labour | Labour | Conservative |
| Leeds Central / Leeds South East (from 1955) | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Leeds North / Leeds North East (from 1955) | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Leeds North East | Labour | Labour | N/A | N/A | N/A | N/A | N/A |
| Leeds North West | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Leeds South | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Leeds South East / Leeds East (from 1955) | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Leeds West | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Normanton | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Penistone | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Pontefract | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Pudsey | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Ripon | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Rother Valley | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Rotherham | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Sheffield Attercliffe | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Sheffield Brightside | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Sheffield Hallam | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Sheffield Heeley | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Sheffield Hillsborough | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op |
| Sheffield Neepsend | Labour | Labour | N/A | N/A | N/A | N/A | N/A |
| Sheffield Park | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Shipley | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Skipton | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Sowerby | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Wakefield | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

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

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Anglesey | Liberal | Labour | Labour | Labour | Labour | Labour | Labour |

### Caernarfonshire (2)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Caernarfon | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Conway | Labour | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |

### Denbighshire (2)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Denbigh | National Liberal | National Liberal | National Liberal | Conservative | Conservative | Conservative | Conservative |
| Wrexham | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Flintshire (2)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Flintshire East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Flintshire West | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Merionethshire (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Merionethshire | Liberal | Labour | Labour | Labour | Labour | Labour | Labour |

### Montgomeryshire (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Montgomeryshire | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal |

### Breconshire and Radnorshire (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Brecon and Radnorshire | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Cardiganshire (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Cardiganshire | Liberal | Liberal | Liberal | Liberal | Liberal | Labour | Labour |

### Carmarthenshire (2)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Carmarthen | Liberal | Liberal | Liberal | Labour | Labour | Labour | Labour |
| Llanelli | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Pembrokeshire (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Pembrokeshire | Labour | Labour | Labour | Labour | Labour | Labour | Conservative |

### Glamorgan (16)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Aberavon | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Aberdare | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Barry | Labour | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Caerphilly | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Cardiff North | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Cardiff South East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Cardiff West | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Gower | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Merthyr Tydfil | Labour | Labour | Labour | Labour | Labour | Labour | Independent Labour |
| Neath | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Ogmore | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Pontypridd | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Rhondda East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Rhondda West | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Swansea East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Swansea West | Labour | Labour | Labour | Conservative | Labour | Labour | Labour |

### Monmouthshire (6)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Abertillery | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Bedwellty | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Ebbw Vale | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Monmouth | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Newport (Monmouthshire) | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Pontypool | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

## Scotland (71)
### Orkney and Shetland (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Orkney and Shetland | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal | Liberal |

### Caithness and Sutherland (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Caithness and Sutherland | Conservative | Conservative | Conservative | Ind. Conservative | Liberal | Labour | Labour |

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

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Inverness | Conservative | Conservative | Conservative | Conservative | Liberal | Liberal | Liberal |
| Ross and Cromarty | National Liberal | National Liberal | National Liberal | National Liberal | Liberal | Liberal | Conservative |
| Western Isles | Labour | Labour | Labour | Labour | Labour | Labour | SNP |

### Banffshire (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Banff | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Moray and Nairnshire (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Moray and Nairn | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Aberdeenshire (4)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Aberdeen North | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Aberdeen South | Conservative | Conservative | Conservative | Conservative | Conservative | Labour | Conservative |
| Aberdeenshire East | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Aberdeenshire West | Conservative | Conservative | Conservative | Conservative | Conservative | Liberal | Conservative |

### Angus and Kincardineshire (4)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Angus North and Mearns | National Liberal | National Liberal | National Liberal | National Liberal | Conservative | Conservative | Conservative |
| Angus South | National Liberal | National Liberal | National Liberal | National Liberal | Conservative | Conservative | Conservative |
| Dundee East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Dundee West | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Argyll (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Argyll | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Perthshire and Kinross-shire (2)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Kinross and West Perthshire | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Perth and East Perthshire | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Stirlingshire and Clackmannanshire (3)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Stirling and Falkirk | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Stirlingshire West | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Stirlingshire East and Clackmannan | Labour | Labour | Labour | Labour | Labour | Labour | Labour Co-op |

### Fife (4)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Dunfermline Burghs | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Fife East | National Liberal | National Liberal | National Liberal | National Liberal | Conservative | Conservative | Conservative |
| Fife West | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Kirkcaldy Burghs | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Dunbartonshire (2)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Dunbartonshire East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Dunbartonshire West | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Renfrewshire (4)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Greenock | Labour | Labour | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op |
| Paisley | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Renfrewshire East | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Renfrewshire West | National Liberal | National Liberal | National Liberal | National Liberal | Labour | Labour | Labour |

### Ayrshire and Bute (5)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Ayr | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Ayrshire Central | Labour | Labour | Conservative | Labour | Labour | Labour | Labour |
| Ayrshire North and Bute | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Ayrshire South | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Kilmarnock | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Lanarkshire (22)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Bothwell | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Coatbridge and Airdrie | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Glasgow Bridgeton | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Glasgow Camlachie / Glasgow Provan (from 1955) | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Glasgow Cathcart | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Glasgow Central | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Glasgow Craigton | N/A | N/A | Conservative | Labour | Labour | Labour | Labour |
| Glasgow Gorbals | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Glasgow Govan | Conservative | Conservative | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op |
| Glasgow Hillhead | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Glasgow Kelvingrove | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Labour |
| Glasgow Maryhill | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Glasgow Pollok | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Labour |
| Glasgow Scotstoun | Conservative | Conservative | Conservative | Labour | Labour | Labour | Labour |
| Glasgow Shettleston | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Glasgow Springburn | Labour Co-op | Labour Co-op | Labour Co-op | Labour Co-op | Labour | Labour | Labour |
| Glasgow Tradeston | Labour Co-op | Labour Co-op | N/A | N/A | N/A | N/A | N/A |
| Glasgow Woodside | Conservative | Conservative | Conservative | Conservative | Labour | Labour | Labour |
| Hamilton | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Lanark | Conservative | Conservative | Conservative | Labour | Labour | Labour | Labour |
| Lanarkshire North | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Motherwell | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Rutherglen | Labour | Conservative | Conservative | Conservative | Labour | Labour | Labour |

### West Lothian (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| West Lothian | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Midlothian and Peeblesshire / Midlothian (from 1955) (8)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Edinburgh Central | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Edinburgh East | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Edinburgh Leith | Labour | Labour | Labour | Labour | Labour | Labour | Labour |
| Edinburgh North | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Edinburgh Pentlands | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Edinburgh South | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Edinburgh West | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |
| Midlothian and Peebles / Midlothian (from 1955) | Labour | Labour | Labour | Labour | Labour | Labour | Labour |

### Dumfriesshire (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Dumfries | National Liberal | National Liberal | National Liberal | National Liberal | Conservative | Conservative | Conservative |

### Kirkcudbrightshire and Wigtownshire (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Galloway | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative | Conservative |

### Roxburghshire and Selkirkshire / Roxburghshire, Selkirkshire and Peeblesshire (from 1955) (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Roxburgh & Selkirk / Roxburgh, Selkirk & Peebles (1955) | Liberal | Conservative | Conservative | Conservative | Conservative | Liberal | Liberal |

### Berwickshire and East Lothian (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Berwick and East Lothian | Labour | Conservative | Conservative | Conservative | Conservative | Labour | Labour |

## Northern Ireland (12)
### Antrim (6)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Antrim North | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Protestant Unionist |
| Antrim South | 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 | Irish Labour | Ulster Unionist | Ulster Unionist | Ulster Unionist | Republican Labour | Republican Labour |

### Down (2)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Down North | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist |
| Down South | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist |

### Armagh (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Armagh | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist |

### Fermanagh and Tyrone (2)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Fermanagh and South Tyrone | Nationalist | Nationalist | Ulster Unionist$^1$ | Ulster Unionist | Ulster Unionist | Ulster Unionist | Unity |
| Mid Ulster | Independent Republican | Independent Republican | Independent Unionist$^2$ | Ulster Unionist | Ulster Unionist | Ulster Unionist | Unity |
$^1$The constituency was won by Philip Clarke of Sinn Féin, but he was unseated on petition on the basis that his criminal conviction (for Irish Republican Army activity) made him ineligible. Instead, the seat was awarded to the Ulster Unionist Party (UUP) candidate.
$^2$The seat was originally won by Tom Mitchell of Sinn Féin, but Mitchell was subsequently unseated upon petition, on the grounds that his terrorist convictions made him ineligible to sit in Parliament. The seat was awarded to Charles Beattie of the UUP. However, Beattie in turn was also found ineligible to sit due to holding an office of profit under the crown, triggering a further by-election.

### Londonderry (1)

| Constituency | 1950 | 1951 | 1955 | 1959 | 1964 | 1966 | 1970 |
| Londonderry | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist | Ulster Unionist |