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| ELR | Route | Section | Remarks |
|---|---|---|---|
| EBW | Ebbw Vale Branch | former Aberbeeg Jn to Ebbw Vale | |
| ECA1 | Edinburgh to Carstairs Line | Carstairs South Jn to Carstairs East Jn | |
| ECA2 | Edinburgh to Carstairs Line | Carstairs East Jn to Slateford Jn | |
| ECA3 | Edinburgh to Carstairs Line | Slateford Jn to Haymarket East Jn | |
| ECM1 | East Coast Main Line (ECML) | London King’s Cross to Shaftholme Jn | |
| ECM2 | East Coast Main Line (ECML) | Shaftholme Jn to Templehirst Jn | |
| ECM3 | East Coast Main Line (ECML) | Templehirst Jn to Colton Jn | |
| ECM4 | East Coast Main Line (ECML) | Colton Jn to York | |
| ECM5 | East Coast Main Line (ECML) | York to Newcastle West Jn | |
| ECM6 | East Coast Main Line (ECML) | Newcastle West Jn to Newcastle | |
| ECM7 | East Coast Main Line (ECML) | Newcastle to regional boundary | |
| ECM8 | East Coast Main Line (ECML) | Edinburgh Waverley (Eastern station limits) to regional boundary | |
| ECM9 | East Coast Main Line (ECML) | Edinburgh Waverley to Edinburgh Waverley (Eastern station limits) | |
| ECN1 | Edinburgh to Aberdeen Line (ECML North) | Edinburgh Waverley to Edinburgh Waverley (Western station limits) | |
| ECN2 | Edinburgh to Aberdeen Line (ECML North) | Edinburgh Waverley (Western station limits) to former Camperdown Jn (Dundee) | |
| ECN3 | Edinburgh to Aberdeen Line (ECML North) | former Camperdown Jn (Dundee) to former St Vigean’s Jn (Arbroath) | |
| ECN4 | Edinburgh to Aberdeen Line (ECML North) | former St Vigean’s Jn (Arbroath) to former Kinnaber Jn | |
| ECN5 | Edinburgh to Aberdeen Line (ECML North) | former Kinnaber Jn to Aberdeen | |
| ECR | Eastleigh East Jn to Romsey Jn | ||
| EDC | Eaglescliffe (Dowmac Concrete Siding) | ||
| EDE | Eden Valley Railway | Appleby to NR boundary | |
| EEE | Liverpool Curve | Earlestown South Jn to Earlestown West Jn | |
| EGG1 | Eggborough Power Station | Approach Tracks | |
| EGG2 | Eggborough Power Station | Merry-Go-Round Loop | |
| EGM1 | Edinburgh to Glasgow (via Falkirk High) Main Line (E&G) | Glasgow Queen Street to Haymarket West Jn | Known anomalies with data source accuracy |
| EGM2 | Edinburgh to Glasgow (via Falkirk High) Main Line (E&G) | Haymarket West Jn to Haymarket | |
| EGM3 | Edinburgh to Glasgow (via Falkirk High) Main Line (E&G) | Edinburgh Waverley (Western station limits) to Haymarket | |
| EGM4 | Edinburgh to Glasgow (via Falkirk High) Main Line (E&G) | Edinburgh Waverley to Edinburgh Waverley (Western station limits) | |
| EGS1 | Edinburgh to Glasgow (via Shotts) | Uddingston Jn to Mossend East Jn | |
| EGS2 | Edinburgh to Glasgow (via Shotts) | Mossend East Jn to Midcalder Jn | |
| EHW | Wapping Branch | Edge Hill Jn to Park Lane Goods | |
| EJM | former Earsdon Jn to Morpeth North Jn | ||
| EJN | Cheadle Branch | Edgeley Jn No. 2 to Northenden Jn | |
| EKE | East Kilbride Branch | Busby Jn to East Kilbride | |
| ELL1 | East London Line | near Dalston Jn to New Cross Gate Down Jn | |
| ELL2 | East London Line | Surrey Canal Jn to New Cross | |
| ELL3 | East London Line | Silwood Jn to NR / TfL interface prior to Old Kent Road Jn | |
| ELL4 | East London Line | NR / TfL interface to Old Kent Road Jn | |
| ELL5 | East London Line | Westbourne Road Jn to Dalston West Curve | |
| ELN | Engine Shed Jn to Leeds City North Jn | ||
| ELY | Ely Valley Branch | former Llantrisant Ely Valley Jn to former Mwyndy Jn | Understood to be disused |
| EMG | East Midlands Gateway Freight Terminal | ||
| EMP | Ely to March to Peterborough | Ely North Jn to Crescent Jn | |
| EMT | Exmouth Branch | Exeter Jn to Exmouth | |
| ENT | Enfield Town Branch | Bury Street Jn to Enfield Town | |
| ERB | Elf Refinery Branch (Milford Haven) | Herbrantson Jn to Robeston | |
| ERY | Exeter Goods Lines | Exeter Riverside Marshalling Yard | |
| ESB | East Somerset Branch | East Somerset Jn to Cranmore | |
| ESK | East Suffolk Line | East Suffolk Jn to Oulton Broad North Jn | |
| ETC | former Waverley Route (Edinburgh to Carlisle) | Carlisle (Kingmoor) section only | Understood to be part closed |
| ETF | Eastleigh West Jn to Fareham East Jn | ||
| ETN | Ely to Thetford to Norwich | Ely North Jn to Trowse Lower Jn | |
| ETW | Eccles, Tyldesley, and Wigan Line | Eccles Jn to Springs Branch Jn | Understood to be part closed |
| EUB | East Usk Branch | East Usk Jn to Fifoots Point (Uskmouth) | |
| EUJ | East Usk Yard | Understood to be part closed | |
| EWC | Ely West Curve | Ely North Jn to Ely West Jn (via Avoiding Line) | |
| EXR | Exeter Railway | Exeter Railway Jn to Marsh Barton | |
| EYD1 | Eastleigh Marshalling Yard | Pad, CMD, and Military Sidings | |
| EYD2 | Eastleigh Marshalling Yard | East Yard Sidings 3-15 | |
| EYD3 | Eastleigh Marshalling Yard | Fields Sidings and Loco Standing | |
| EYD4 | Eastleigh Marshalling Yard | Station Carriage Sidings 1-14 | |
| EYD5 | Eastleigh Marshalling Yard | Works Outside Roads, Wagon and Test Shop | |
| EYD6 | Eastleigh Marshalling Yard | Works Shed Roads and Extension Roads 1-15 | |
| EYD7 | Eastleigh Marshalling Yard | Diesel Depot and Sheds | |
| EYD8 | Eastleigh Marshalling Yard | Yard Airport Stabling Sidings | |
| EYD9 | Eastleigh Marshalling Yard | Carriage Servicing Sheds |