# List of railway lines in Great Britain

This is a list of railway lines in Great Britain that are currently in operation, split by country and region.
There are a limited number of main inter-regional lines, with all but one entering Greater London. The line from London to the Channel Tunnel is the only line designated 'high speed', although the other main routes also operate limited-stop express services.
The bulk of the secondary network is concentrated in London and the surrounding East and South East regions; an area marketed by National Rail as London and the South East. The majority of these lines are radial to London. There is a further concentration of routes around Birmingham in the West Midlands and in the urbanised part of northern England that stretches from Liverpool in the west, via Greater Manchester to Leeds in the east.
Some areas, such as Wales and Scotland, have relatively sparse railway provision. There are local lines throughout all areas of Great Britain with some services designated as community railways.

## England
### London

This is a list of routes entirely contained within Greater London.
| Name | Route, or previous name | Opened | Regions | Electrified |
| Acton–Northolt line | formerly "New North Main Line" | 1903 | London | — |
| Bromley North Line | Grove Park to Bromley North | 1878 | London | Third rail, 750 V DC |
| Catford Loop Line | Brixton to Shortlands | 1892 | London | Third rail, 750 V DC |
| Chessington branch line | Raynes Park to Chessington South | 1938–1939 | London | Third rail, 750 V DC |
| Chingford branch line | Clapton to Chingford | 1873 | London | OHLE, 25 kV 50 Hz AC |
| Crystal Palace line | Balham Junction to Beckenham Junction | 1856–1858 | London | Third rail, 750 V DC |
| Dudding Hill line | Acton to Cricklewood | 1875 | London | — |
| East London line | Highbury & Islington to West Croydon | 1869–2010 | London | Third rail, 750 V DC |
| Holborn Viaduct–Herne Hill line | | 1863–1866 | London | Third rail, 750 V DC |
| Gospel Oak to Barking line | | 1894–1868 | London | OHLE, 25 kV 50 Hz AC (partial) |
| Greenford branch line | GWML to Greenford | 1903 | London | — |
| Greenwich line | North Kent East junction to Charlton Junction | 1836 | London | Third rail, 750 V DC |
| Mid-Kent line | Lewisham to Hayes | 1857–1882 | London | Third rail, 750 V DC |
| Hounslow Loop Line | Barnes Junction to Feltham Junction | 1850 | London | Third rail, 750 V DC |
| South London line | | 1886 | London | Third rail, 750 V DC |
| Sutton Loop line | Streatham South Junction to Sutton | 1864-1929 | London | Third rail, 750 V DC |
| Kingston loop line | Twickenham to New Maldon | 1863–1869 | London | Third rail, 750 V DC |
| North London line | Richmond to Stratford | 1846–1869 | London | OHLE, 25 kV 50 Hz ACThird rail, 750 V DC |
| Northern City Line | Moorgate to Finsbury Park | 1904 | London | OHLE, 25 kV 50 Hz ACThird rail, 750 V DC |
| Greenwich Park branch line | Nunhead to Lewisham | 1929 | London | Third rail, 750 V DC |
| Romford–Upminster line | | 1893 | London | OHLE, 25 kV 50 Hz AC |
| West London line | Clapham Junction to Willesden Junction | 1844 | London | OHLE, 25 kV 50 Hz ACThird rail, 750 V DC |

#### Terminus

| Name | End and major calling points | Countries and regions | Category |
| Chiltern Main Line | London, High Wycombe, Bicester, Banbury, Leamington Spa, Solihull, Birmingham | England: London, South East, West Midlands | Main Line 100 mph |
| East Coast Main Line | London, Leeds, York, Newcastle, Edinburgh | England: East, East Midlands, London, North East, Yorkshire and the Humber; Scotland | High Speed Main Line 125 mph |
| Great Eastern Main Line | London, Ipswich, Norwich | England: East, London | Main Line 100 mph |
| Great Western Main Line | London, Bristol | England: London, South East, South West | High Speed Main Line 125 mph |
| High Speed 1 | London, Channel Tunnel | England: East, London, South East. Continental Europe: France, Belgium, Netherlands, Germany | High Speed Line 186 mph |
| Midland Main Line | London, Leicester, Nottingham, Sheffield | England: East, East Midlands, London, Yorkshire and the Humber | High Speed Main Line 125 mph |
| South West Main Line | London, Southampton, Bournemouth, Weymouth | England: London, South East, South West | Main Line 100 mph |
| West Coast Main Line | London, Glasgow with spurs to Birmingham, Liverpool, Manchester, Holyhead and Edinburgh | England: London, North West, South East, West Midlands; Scotland; North Wales | High Speed Main Line 125 mph |

### South East England

This is a list of all routes that enter the South East England region.
| Name | Route, or previous name | Opened | Regions | Electrified |
| Alton line | Brookwood to Alton | 1852 | South East | Third rail, 750 V DC |
| Arun Valley line | Three Bridges to Arundel | 1848–1863 | South East | Third rail, 750 V DC |
| Ascot–Ash Vale line | | | South East | Third rail, 750 V DC |
| Ashford to Ramsgate line | | 1846 | South East | Third rail, 750 V DC |
| Aylesbury–Princes Risborough line | | 1863 | South East | — |
| Bexleyheath line | Lewisham to Dartford | 1895 | London, South East | Third rail, 750 V DC |
| Brighton Main Line | | 1839–1941 | London, South East | Third rail, 750 V DC |
| Caterham line | Purley to Caterham | 1856 | London, South East | Third rail, 750 V DC |
| Chatham Main Line | London Victoria to Dover Priory | 1858–1926 | London, South East | Third rail, 750 V DC |
| Chertsey branch line | Staines to Weybridge | 1849 | South East | Third rail, 750 V DC |
| Cherwell Valley line | Banbury to Didcot Parkway | 1844–1873 | South East | — |
| Chiltern Main Line | Marylebone to Birmingham Snow Hill | 1852–1910 | London, South East, West Midlands | — |
| Cotswold Line | Oxford to Hereford | 1851–1860 | South East, South West, West Midlands | — |
| Dartford Loop Line | Hither Green to Dartford | 1866 | London, South East | Third rail, 750 V DC |
| East Coastway line | Brighton to Hastings | 1846–1871 | South East | Third rail, 750 V DC |
| Eastleigh–Fareham line | | 1841 | South East | Third rail, 750 V DC |
| Eastleigh–Romsey line | | 1847 | South East | — |
| East West Rail | Oxford to Bletchley | 2024 | South East England | Not initially |
| Elizabeth line | Heathrow Terminal 4, Heathrow Terminal 5 and Reading to Abbey Wood and Shenfield | 2022 | East, London, South East | 25 kV 50 Hz AC |
| Epsom Downs Branch | Sutton to Epsom Downs | 1865 | London, South East | Third rail, 750 V DC |
| Hampton Court branch line | SWML to Hampton Court | 1849 | South East | Third rail, 750 V DC |
| Hastings line | Tonbridge to Hastings | 1845–1852 | South East | Third rail, 750 V DC |
| Henley branch line | Twyford to Henley-on-Thames | 1857 | South East | — |
| High Speed 1 | London to Channel Tunnel | 2003–2007 | London, South East | OHLE, 25 kV 50 Hz AC |
| Island Line | Isle of Wight | 1864 | South East | Third rail, 750 V DC |
| Kent Coast line | Minster East Jn to Buckland Jn | 1847 | South East | Third rail, 750 V DC |
| London–Aylesbury line | | 1868 and 1899 | London, East | Fourth rail, 750 V DC (partial) |
| Lymington branch line | SWML to Lymington Pier | 1858 | South East | Third rail, 750 V DC |
| Maidstone line | Swanley to Ashford International | 1874–1884 | South East | Third rail, 750 V DC |
| Marlow branch line | Maidenhead to Marlow | 1854 | South East | — |
| Marshlink line | Ashford International to Hastings | 1851 | South East | — |
| Marston Vale line | Bletchley to Bedford | 1845 | East, South East | — |
| Medway Valley line | Strood to SEML | 1844–1856 | South East | Third rail, 750 V DC |
| New Guildford line | Surbiton to Guildford | 1885 | South East | Third rail, 750 V DC |
| North Downs Line | Reading to Redhill | 1849 | South East | Third rail, 750 V DC (partial) |
| North Kent Line | London to Strood | 1846–1849 | London, South East | Third rail, 750 V DC |
| Oxford–Bicester line | | 1850 | South East | — |
| Oxted line | South Croydon to East Grinstead or Uckfield | 1858–1888 | London, South East | Third rail, 750 V DC (Croydon–East Grinstead) |
| Portsmouth Direct line | Woking to Portsmouth Harbour | 1845–1858 | South East | Third rail, 750 V DC |
| Portsmouth line | | 1847–1868 | South East | Third rail, 750 V DC |
| Reading–Basingstoke line | | 1848 | South East | — |
| Reading–Taunton line | | 1847–1906 | South East, South West | — |
| Redhill–Tonbridge line | | 1884 | South East | Third rail, 750 V DC |
| Seaford branch line | Lewes to Seaford | 1864 | South East | Third rail, 750 V DC |
| Sheerness line | Sittingbourne to Sheerness-on-Sea | 1860 | South East | Third rail, 750 V DC |
| Shepperton branch line | Kingston Loop to Shepperton | 1864–1894 | London, South East | Third rail, 750 V DC |
| Slough–Windsor & Eton line | | 1849 | South East | — |
| South Eastern Main Line | Cannon Street or Charing Cross to Dover Priory | 1842–1871 | London, South East | Third rail, 750 V DC |
| Staines–Windsor line | | 1848–1849 | South East | Third rail, 750 V DC |
| Sutton and Mole Valley lines | | 1847–1868 | London, South East | Third rail, 750 V DC |
| Tattenham Corner line | Purley to Tattenham Corner | 1897–1901 | London, South East | Third rail, 750 V DC |
| Waterloo–Reading line | | 1846–1856 | London, South East | Third rail, 750 V DC |
| Wessex Main Line | Bristol Temple Meads to Southampton Central | 1847–1856 | South East, South West | — |
| West Coastway line | Brighton to Southampton Central | 1840–1889 | South East | Third rail, 750 V DC |
| West of England line | Basingstoke to Exeter St Davids | 1854–1860 | South East, South West | — |

### South West

This is a list of all routes that enter the South West England region.
| Name | Route, or previous name | Opened | Regions | Electrified |
| Atlantic Coast Line | Par to Newquay | 1874 | South West | — |
| Avocet Line | Exeter to Exmouth | 1862 | South West | — |
| Bristol–Exeter line | | 1841–1842 | South West | — |
| Cornish Main Line | Plymouth to Penzance | 1867 | South West | — |
| Cotswold Line | Oxford to Hereford | 1851–1860 | South East, South West, West Midlands | — |
| Dartmoor line | Exeter to Okehampton | 1851–1871 | South West | — |
| Exeter–Plymouth line | | 1846–1849 | South West | — |
| Gloucester–Newport line | | 1850 | South West | — |
| Golden Valley line | Swindon to Cheltenham Spa | 1845 | South West | — |
| Heart of Wessex Line | Bristol Temple Meads to Weymouth | 1857 | South West | — |
| Looe Valley Line | Liskeard to Looe | 1860–1901 | South West | — |
| Maritime Line | Truro to Falmouth Docks | 1863 | South West | — |
| Reading–Taunton line | | 1847–1906 | South East, South West | OHLE, 25 kV 50 Hz AC (partial) |
| Riviera Line | Exeter St Davids to Paignton | 1846–1859 | South West | — |
| Severn Beach line | Bristol to Severn Beach | 1840–1900 | South West | — |
| South Wales Main Line | Swindon to Swansea | 1850–1903 | South West, South Wales | — |
| St Ives Bay Line | St Erth to St Ives | 1877 | South West | — |
| Tamar Valley Line | Plymouth to Gunnislake | 1890–1908 | South West | — |
| Tarka Line | Exeter to Barnstaple | 1851–1854 | South West | — |
| Wessex Main Line | Bristol to Southampton | 1847–1856 | South East, South West | — |
| West of England line | SWML to Exeter | 1854–1860 | South East, South West | — |

#### Terminus

| Name | End and major calling points | Countries and regions | Category |
| Cross Country Route | Bristol, Birmingham, Sheffield, Leeds, York | England: East Midlands, South West, Yorkshire and the Humber, West Midlands | High Speed Main Line 125 mph |
| South Wales Main Line | Bristol, Swansea via Cardiff | England: South West; Wales: South | Main Line (100 mph) |

### North West England

This is a list of all routes that enter the North West England region.
| Name | Route, or previous name | Opened | Regions | Electrified |
| Blackpool branch lines | WCML to Blackpool North or South | 1846–1865 | North West | OHLE, 25 kV 50 Hz AC (partial) |
| Borderlands line | Wrexham Central to Bidston | 1887–1896 | North West | — |
| Buxton line | Manchester Piccadilly to Buxton | 1863 | East Midlands, North West | OHLE, 25 kV 50 Hz AC |
| Calder Valley line | Blackpool North or Manchester Victoria to Leeds | | North West, Yorkshire and the Humber | — |
| Chester–Birkenhead line | | 1840 | North West | Third rail, 750 V DC |
| Chester–Warrington line | | 1850 | North West | — |
| Crewe–Liverpool line | | | North West | OHLE, 25 kV 50 Hz AC |
| Crewe–Manchester line | | 1841 | North West | OHLE, 25 kV 50 Hz AC |
| Cumbrian Coast line | Carlisle to Barrow-in-Furness | 1844–1845 | North West | — |
| East Lancashire line | Preston to Colne | 1846–1848 | North West | — |
| Furness line | Barrow-in-Furness to Carnforth | 1846–1858 | North West | — |
| Glossop line | Manchester Piccadilly to Glossop or Hadfield | 1842–1845 | East Midlands, North West | OHLE, 25 kV 50 Hz AC |
| Hooton–Helsby line | | 1863 | North West | — |
| Hope Valley line | Manchester Piccadilly to Sheffield | 1894 | North West, Yorkshire and the Humber | — |
| Huddersfield line | Manchester Piccadilly or Victoria to Huddersfield | 1849 | North West, Yorkshire and the Humber | Planned |
| Kirkby branch line | Kirkby to Wigan Wallgate | 1848 | North West | — |
| Leeds–Morecambe line | | 1846–1864 | North West, Yorkshire and the Humber | OHLE, 25 kV 50 Hz AC (partial) |
| Liverpool–Manchester lines | | 1830 onwards | North West | OHLE, 25 kV 50 Hz AC (partial) |
| Liverpool–Wigan line | | 1869–1871 | North West | OHLE, 25 kV 50 Hz AC |
| Manchester–Preston line | | 1838–1841 | North West | OHLE, 25 kV 50 Hz AC |
| Manchester–Southport line | | | North West | — |
| Mid-Cheshire line | Manchester Piccadilly to Chester | 1855–1888 | North West | — |
| Morecambe branch line | Lancaster to Morecambe or Heysham Port | 1864 | North West | — |
| Ormskirk branch line | Preston to Ormskirk | 1848 | North West | — |
| Ribble Valley line | Manchester Victoria to Clitheroe | 1845–1872 | North West | — |
| Settle–Carlisle line | | 1875 | North West, Yorkshire and the Humber | — |
| Stafford–Manchester line | | 1848 | North West, West Midlands | OHLE, 25 kV 50 Hz AC |
| Stockport–Stalybridge line | | | North West | — |
| Styal Line | Manchester Piccadilly to Manchester Airport or Wilmslow | 1909 | North West | OHLE, 25 kV 50 Hz AC |
| Tyne Valley line | Newcastle to Carlisle | 1834–1837 | North East, North West | — |
| Windermere branch line | Oxenholme Lake District to Windermere | 1847 | North West | Proposed |
| Wirral line | Chester, West Kirby, Elsemere, and New Brighton to Liverpool | | North West | |

### West Midlands

This is a list of all routes that enter the West Midlands region.
| Name | Route, or previous name | Opened | Regions | Electrified |
| Birmingham to Peterborough line | | 1840–1860 | East, East Midlands, West Midlands | — |
| Birmingham to Worcester via Bromsgrove Line | | 1840–1879 | West Midlands | OHLE, 25 kV 50 Hz AC (partial) |
| Birmingham to Worcester via Kidderminster line | | 1852–1867 | West Midlands | — |
| Camp Hill line | | 1840-1841 | West Midlands | — |
| Chase Line | Birmingham New Street to Walsall and Rugeley | 1837–1859 (partly closed 1965, reopened 1989–1997) | West Midlands | OHLE, 25 kV 50 Hz AC |
| Chiltern Main Line | Marylebone to Birmingham Snow Hill | 1852–1910 | London, South East, West Midlands | — |
| Cotswold Line | Oxford to Hereford | 1851–1860 | South East, South West, West Midlands | — |
| Coventry–Leamington line | | 1851 | West Midlands | — |
| Coventry–Nuneaton line | | 1850 | West Midlands | — |
| Crewe–Derby line | | 1848 | East Midlands, North West, West Midlands | OHLE, 25 kV 50 Hz AC (partial) |
| Cross-City Line | Redditch or Bromsgrove to Lichfield | 1837–1876 | West Midlands | OHLE, 25 kV 50 Hz AC |
| Cross Country Route | | 1948 | East Midlands, North East, Scotland, South West, Wales, West Anglia, & West Midlands | — |
| Leamington–Stratford line | | 1860 | West Midlands | — |
| Leicester–Burton upon Trent line | | 1832–1849 | East Midlands, West Midlands | — |
| Northampton loop | | 1881 | East Midlands, West Midlands | OHLE, 25 kV 50 Hz AC |
| North Warwickshire Line | Birmingham Snow Hill to Stratford-upon-Avon | 1908 | West Midlands | — |
| Rugby–Birmingham–Stafford line | | 1837 | West Midlands | OHLE, 25 kV 50 Hz AC |
| Shrewsbury–Chester line | | 1848 | North West, West Midlands | — |
| Stafford–Manchester line | | 1848–1887 | North West, West Midlands | OHLE, 25 kV 50 Hz AC |
| Stone to Colwich Line | | 1849 | West Midlands | OHLE, 25 kV 50 Hz AC |
| Stourbridge Town branch line | | 1879 | West Midlands | — |
| Sutton Park line | Walsall to Castle Bromwich and Water Orton | 1879 | West Midlands | — |
| Trent Valley line | part of the West Coast Main Line | 1847 | West Midlands | OHLE, 25 kV 50 Hz AC |
| Walsall–Wolverhampton line | | 1837 | West Midlands | OHLE, 25 kV 50 Hz AC |
| Welsh Marches line | Newport to Shrewsbury | 1852–1858 | North WestWest MidlandsMid WalesSouth Wales | — |
| Wolverhampton–Shrewsbury line | | 1848–1849 | West Midlands | — |

### East of England

This is a list of all routes that enter the East of England region.
| Name | Route, or previous name | Opened | Regions | Electrified |
| Abbey Line | Watford Junction to St Albans Abbey | 1858 | East | OHLE, 25 kV 50 Hz AC |
| Birmingham–Peterborough line | | 1840–1860 | East, East Midlands, West Midlands | — |
| Bittern Line | Sheringham to Norwich | 1874–1877 | East | — |
| Braintree branch line | Witham to Braintree | 1848 | East | OHLE, 25 kV 50 Hz AC |
| Breckland line | Cambridge to Norwich | 1845 | East | — |
| Cambridge line | Cambridge to ECML | 1851 | East | OHLE, 25 kV 50 Hz AC |
| Crouch Valley line | Wickford to Southminster | 1889 | East | OHLE, 25 kV 50 Hz AC |
| East Suffolk line | Ipswich to Lowestoft | 1854 | East | — |
| Ely–Peterborough line | | 1847 | East | — |
| Felixstowe branch line | Ipswich to Felixstowe | 1877 | East | — |
| Fen line | Cambridge to King's Lynn | 1846 | East | OHLE, 25 kV 50 Hz AC |
| Gainsborough line | Marks Tey to Sudbury | 1865 | East | — |
| Great Northern Route | London Moorgate to King's Lynn | | London, East | OHLE, 25 kV 50 Hz AC |
| Hertford East branch line | Hertford East to Broxbourne | 1843 | East | OHLE, 25 kV 50 Hz AC |
| Hertford loop line | Stevenage to Alexandra Palace | 1871–1924 | London, East | OHLE, 25 kV 50 Hz AC |
| Ipswich–Ely line | | 1846–1851 | East | — |
| Lea Valley lines | | 1840–1891 | London, East | OHLE, 25 kV 50 Hz AC |
| London, Tilbury and Southend line | Fenchurch Street to Shoeburyness | 1854–1888 | London, East | OHLE, 25 kV 50 Hz AC |
| Marston Vale line | Bletchley to Bedford | 1845 | East, South East | — |
| Mayflower line | Manningtree to Harwich Town | 1854 | East | OHLE, 25 kV 50 Hz AC |
| Peterborough–Lincoln line | | 1848–1882 | East | — |
| Shenfield–Southend line | | 1892 | East | OHLE, 25 kV 50 Hz AC |
| Sunshine Coast Line | Colchester to Walton-on-the-Naze | 1847–1882 | East | OHLE, 25 kV 50 Hz AC |
| Watford DC line | Euston to Watford Junction | 1862–1922 | London, East | Third rail, 750 V DC |
| West Anglia Main Line | Liverpool Street to Cambridge or Stansted Airport | 1840–1990 | London, East | OHLE, 25 kV 50 Hz AC |
| Wherry Lines | Norwich to Great Yarmouth or Lowestoft | 1844–1882 | East | — |

### East Midlands

This is a list of all routes that enter the East Midlands region.
| Name | Route, or previous name | Opened | Regions | Electrified |
| Barton line | Barton-on-Humber to Cleethorpes | 1848 | East Midlands | — |
| Birmingham–Peterborough line | | 1840–1860 | East, East Midlands, West Midlands | — |
| Buxton line | Manchester Piccadilly to Buxton | 1863 | East Midlands, North West | OHLE, 25 kV 50 Hz AC (partial) |
| Crewe–Derby line | | 1848 | East Midlands, North West, West Midlands | OHLE, 25 kV 50 Hz AC (partial) |
| Derwent Valley line | Derby to Matlock | 1839–1849 | East Midlands | — |
| Doncaster–Lincoln line | | 1849 | East Midlands, Yorkshire and the Humber | — |
| Glossop line | Manchester Piccadilly to Glossop or Hadfield | 1844 | East Midlands, North West | OHLE, 25 kV 50 Hz AC |
| Ivanhoe line | part of the Midland Main Line | 1840 or 1993 | East Midlands | — |
| Leicester–Burton upon Trent line | | 1832–1849 | East Midlands | — |
| Northampton loop | | 1881 | East Midlands, West Midlands | OHLE, 25 kV 50 Hz AC |
| Nottingham–Grantham line | | 1850 | East Midlands | — |
| Nottingham–Lincoln line | | 1846 | East Midlands | — |
| Oakham–Kettering line | | 1879 | East Midlands | — |
| Poacher Line | Grantham to Skegness | 1848–1873 | East Midlands | — |
| Robin Hood Line | Nottingham to Worksop | 1848 (reopened 1993–1998) | East Midlands | — |
| Sheffield–Lincoln line | | 1849 | East Midlands, Yorkshire and the Humber | — |
| Erewash Valley Line | | 1844–1862 | East Midlands | — |

### Yorkshire and North East

This is a list of all routes that enter the Yorkshire and the Humber and North East England regions.
| Name | Route, or previous name | Opened | Regions | Electrified |
| Durham Coast Line | Newcastle to Middlesbrough | 1833–1905 | North East | Overhead line, 1,500 V DC (partial) |
| Esk Valley line | Middlesbrough to Whitby | 1835–54 | North East, Yorkshire and the Humber | — |
| Tyne Valley line | Newcastle to Carlisle | 1834–1837 | North East, North West | — |
| Northallerton–Eaglescliffe line | | 1852 | North East, Yorkshire and the Humber | — |
| Tees Valley line | Bishop Auckland to Saltburn | 1825–1887 | North East | — |
| Airedale line | Leeds to Skipton | 1846 | Yorkshire and the Humber | OHLE, 25 kV 50 Hz AC |
| Askern branch line | Knottingley to Doncaster | 1848 | Yorkshire and the Humber | — |
| Calder Valley line | Blackpool North or Manchester Victoria to Leeds | 1840s | North West, Yorkshire and the Humber | — |
| Dearne Valley line | Sheffield to York | 1839–40 | Yorkshire and the Humber | — |
| Doncaster–Lincoln line | | 1849 | East Midlands, Yorkshire and the Humber | — |
| Hallam Line | Sheffield to Leeds | | Yorkshire and the Humber | — |
| Harrogate line | Leeds to York | 1848 | Yorkshire and the Humber | — |
| Hope Valley line | Manchester Piccadilly to Sheffield | 1894 | North West, Yorkshire and the Humber | — |
| Huddersfield line | Manchester Piccadilly or Victoria to Huddersfield | 1849 | North West, Yorkshire and the Humber | Planned |
| Hull to York Line | | 1840 | Yorkshire and the Humber | — |
| Leeds–Morecambe line | | 1846–50 | North West, Yorkshire and the Humber | — |
| Leeds–Bradford lines | | | Yorkshire and the Humber | OHLE, 25 kV 50 Hz AC (partial) |
| Penistone Line | Huddersfield to Sheffield | 1845–50 | Yorkshire and the Humber | — |
| Pontefract line | Leeds to Goole | 1848 | Yorkshire and the Humber | — |
| Selby Line | Leeds to Hull | 1834 | Yorkshire and the Humber | OHLE, 25 kV 50 Hz AC (partial) |
| Settle–Carlisle line | | 1875 | North West, Yorkshire and the Humber | — |
| Sheffield–Lincoln line | | 1849 | East Midlands, Yorkshire and the Humber | — |
| South Humberside Main Line | Doncaster to Cleethorpes | 1848 | Yorkshire and the Humber | — |
| Swinton–Doncaster line | | | South Yorkshire | — |
| Wakefield line | Leeds to Sheffield | | Yorkshire and the Humber | OHLE, 25 kV 50 Hz AC (partial) |
| Wharfedale line | Leeds to Bradford Forster Square or Ilkley | 1865 | Yorkshire and the Humber | OHLE, 25 kV 50 Hz AC |
| Hull–Scarborough line | Hull to Scarborough | 1845–46 | Yorkshire and the Humber | — |
| York–Scarborough line | | 1845 | Yorkshire and the Humber | — |

## Scotland
### Scotrail Intercity lines

* Edinburgh–Dundee line
* Glasgow–Edinburgh via Falkirk line
* Glasgow–Dundee line
* Highland Main Line
* Dundee–Aberdeen line
* Aberdeen–Inverness line

### Glasgow commuter lines

* Argyle Line
* Ayrshire Coast Line
* Glasgow–Edinburgh via Carstairs line
* Cathcart Circle Lines
* Croy Line
* Cumbernauld Line
* Inverclyde Line
* Maryhill Line
* Motherwell–Cumbernauld line
* North Clyde Line
* Paisley Canal line
* Shotts Line
* Glasgow South Western Line
* Whifflet Line

### Edinburgh commuter lines

* Glasgow–Edinburgh via Carstairs line
* Edinburgh–Dunblane line
* Fife Circle Line
* North Berwick Branch
* North Clyde Line
* Shotts Line
* Borders Railway

### Rural lines and Great Scenic Railways

* Borders Railway
* Far North Line
* Kyle of Lochalsh line
* West Highland Line
* Glasgow South Western Lines

## Wales
### Main lines

* North Wales Main Line
* South Wales Main Line
* Shrewsbury–Chester line
* Welsh Marches line

### Cardiff commuter lines

* Butetown branch line
* Cardiff City Line
* Coryton Line
* Ebbw Valley Railway
* Gloucester–Newport line
* Maesteg Line
* Merthyr line
* Rhondda line
* Rhymney line
* Vale of Glamorgan Line

### Rural lines

* Borderlands line
* Cambrian Line
* Conwy Valley line
* Heart of Wales line
* West Wales lines

## Lines under construction

| Name | Between | Opening | Regions | Electrification |
| High Speed 2 | London Euston to Birmingham Curzon Street | c. 2030 | South East England | 25 kV 50 Hz AC overhead line |