Last update 4 August 2024
Please select a starting letter from the links below:
| ELR | Line name | Mileages | Datum | Notes |
|---|---|---|---|---|
| YAL | Yarmouth to Lowestoft Line | 0.00 - 9.30 | Lowestoft Coke Ovens Junction | |
| YAQ | Yarmouth North Quay Branch | 18.09 - 19.71 | Norwich via Acle | |
| YAT | Yate Branch | 119.75 - 121.28 | Derby | Remiled 1970: formerly 0.00 - 1.34 ex Westerleigh West Junction. Sometimes included in BGL2 |
| YBZ | Yate Branch (Down Loop Line) | 0.38 - 1.34 | Westerleigh West Junction | |
| YCI | Yniscedwyn Ironworks Branch | 13.21 - 13.44 | Swansea St Thomas Station | |
| YDS | St Catherine's Junction to Decoy South Junction Curve | 15.14 - 15.71 | Brancliffe East Junction | |
| YDZ | Ynysydwr Loop | Now YZD | ||
| YEA | Yealmpton Branch | 0.00 - 6.48 | Plymstock Station | |
| YEG | Yarmouth Beach to Gorleston North Line | 0.00 - 2.53 | Lowestoft Line Junction | Formerly 72.63 - 75.36 |
| YEO | Yeovil Branch | 141.34 - 155.03 | Paddington via Melksham and Yeovil | |
| YFZ | Ynysfach Loop | Now YNF | ||
| YJP | Yeovil Junction to Pen Mill | 0.00 - 1.42 | Yeovil Junction | 0.00 - 1.06 formerly part of YVT, 1.06 - 1.11 formerly YSJ |
| YKR | Yoker Line | 0.00 - 4.73 | Hyndland East Junction | |
| YMC | Yorkshire Main Colliery Branch | 68.07 - 71.57 | Manchester Victoria via Wakefield | |
| YMS | York Malton and Scarborough Line | 0.09 - 42.06 | York | |
| YMW | York to Market Weighton Line | 1.55 - 22.56 | York | |
| YNC | Yniscedwyn Branch | 12.58 - 13.64 | Swansea St Thomas Station | |
| YNF | Ynysfach Loop (includes part of Low Level Loop) | 0.00 - 0.35 | Ynysfach Junction | Formerly YFZ |
| YNL | Ynysybwl Loop | 0.00 - 1.29 | Stormstown Junction No 1 | |
| YNY | Ynysybwl Branch | 14.61 - 19.30 | Cardiff Bute Road | 15.72 - 16.04 now 1.29 - 1.41 (YNL mileage) |
| YNZ | Ynysfach Branch | 24.19 - 24.60 | Cardiff Bute Road | |
| YRC | York Road Curve | 1.57 - 2.13 | Moorgate | |
| YRG | Doncaster York Road Goods | 0.00 - 0.58 | Doncaster Junction | |
| YSG | Ystradgynlais Branch | 0.00 - 7.22 | Colbren Junction | |
| YSJ | Yeovil South Junction | 1.06 - 1.11 | Yeovil Junction | Now part of YJP |
| YST | Ystrad Branch | 0.00 - 0.47 | Ystrad Branch Junction | |
| YSZ | Yspitty Branch | 0.00 - 0.34 | Yspitty Branch Junction | |
| YTT | Test Codes | see separate portions | ||
| YTT1 | Tony's ELR |
n/a | n/a | |
| YTT2 | George's ELR |
n/a | n/a | |
| YVT | Yeovil Town Branch | 0.00 - 1.61 | Yeovil Junction | Listed to 1.51. 0.00 - 1.06 now in YJP |
| YZD | Ynysydwr Loop | 15.46 - 16.01 | Cardiff Bute Road | Formerly YDZ. 15.46 - 15.50 now DPB |