List of railway lines in Great Britain

thumb|Map of the rail infrastructure of Great Britain, including the speed, use, electrification and number of tracks on its railway lines.

This is a list of railway lines in Great Britain that are currently in operation, split by country, with England also split by 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.

{| class="wikitable sortable"

! Name || Route, or previous name || Opened || Regions || Electrified

| Acton–Northolt line || formerly "New North Main Line" || 1903 ||London ||

| Bromley North Line || to || 1878 || London ||

| Catford Loop Line || to || 1892 || London ||

| Chessington branch line || to || 1938–1939 || London ||

| Chingford branch line || to || 1873 || London || OHLE,

| Crystal Palace line || Balham Junction to || 1856–1858 || London ||

| Dudding Hill line || to || 1875 || London ||

| East London line || to || 1869–2010 || London ||

| Gospel Oak to Barking line || || 1894–1868 || London || OHLE, (partial)

| Greenford branch line || GWML to || 1903 || London ||

| Greenwich line || North Kent East junction to Charlton Junction || 1836 || London ||

| Greenwich Park branch line || to || 1929 || London ||

| Hayes line || to || 1857–1882 || London ||

| Holborn Viaduct–Herne Hill line || || 1863–1866 || London ||

| Hounslow Loop line || Barnes Junction to Feltham Junction || 1850 || London ||

| Kingston loop line || to || 1863–1869 || London ||

| North London line || to || 1846–1869 || London ||

| Northern City Line || to || 1904 || London ||

| Romford–Upminster line || || 1893 || London || OHLE,

| South London line || to || 1886 || London ||

| Sutton Loop Line || Streatham South Junction to || 1864-1929 || London ||

| West London line || to || 1844 || London ||

Terminus

{| class="wikitable"

! 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

| 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

| Great Eastern Main Line || London, Ipswich, Norwich || England: East, London || Main Line

| Great Western Main Line || London, Bristol || England: London, South East, South West || High Speed Main Line

| High Speed 1 || London, Channel Tunnel || England: East, London, South East.

Continental Europe: France, Belgium, Netherlands, Germany

|| High Speed Line

| Midland Main Line || London, Leicester, Nottingham, Sheffield || England: East, East Midlands, London, Yorkshire and the Humber || High Speed Main Line

| South West Main Line ||London, Southampton, Bournemouth, Weymouth || England: London, South East, South West || Main Line

| 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

South East England

thumb|The commuter network stretches from London to the coast and there is a connection to France through the Channel Tunnel

This is a list of all routes that enter the South West England region.

{| class="wikitable sortable"

! Name || Route, or previous name || Opened || Regions || Electrified

| Atlantic Coast Line || Par to Newquay || 1874 || South West ||

| Avocet Line || to || 1862 || South West ||

| Bristol–Exeter line || || 1841–1842 || South West ||

| Cornish Main Line || to || 1867 || South West ||

| Cotswold Line || to || 1851–1860 || South East, South West, West Midlands ||

|Dartmoor line || to Okehampton || 1851–1871 || South West ||

| Exeter–Plymouth line || || 1846–1849 || South West ||

| Gloucester–Newport line || || 1850 || South West ||

| Golden Valley line || to || 1845 || South West ||

| Heart of Wessex Line || to || 1857 || South West ||

| Looe Valley Line || to || 1860–1901 || South West ||

| Maritime Line || to || 1863 || South West ||

| Reading–Taunton line || || 1847–1906 || South East, South West || OHLE, (partial)

| Riviera Line || to || 1846–1859 || South West ||

| Severn Beach line || Bristol to || 1840–1900 || South West ||

| South Wales Main Line || to || 1850–1903 || South West, South Wales ||

| St Ives Bay Line || to || 1877 || South West ||

| Tamar Valley Line || to || 1890–1908 || South West ||

| Tarka Line || Exeter to || 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

{| class="wikitable"

! 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

| South Wales Main Line || Bristol, Swansea via Cardiff || England: South West; Wales: South || Main Line

North West England

[[File:North West England in England.svg|thumb|There is a significant concentration of routes around urbanised Liverpool and Manchester with the northern part of the region less well served

Terminus

South East England

Terminus

North West England

See also