The information below was originally compiled by 'Sacro' (Ben Woodward); updated in March 2013 by 'UKTrainMan'.
| Operator | Code | Notes |
|---|---|---|
| Abellio ScotRail | SR | |
| Avanti West Coast | VT | |
| c2c | CC | |
| Caledonian Sleeper | CS | |
| Chiltern Railways | CH | |
| CrossCountry | XC | |
| East Midlands Railway | EM | |
| Eurostar | ES | |
| Gatwick Express | GX | Govia Thameslink Railway (GTR) sub-brand |
| Grand Central | GC | |
| Great Northern | GN | Govia Thameslink Railway (GTR) sub-brand |
| Great Western Railway (GWR) | GW | |
| Greater Anglia | LE | |
| Heathrow Express | HX | |
| Hull Trains | HT | |
| Island Line | IL | South Western Railway sub-brand |
| London Northwestern Railway (LNR) | LN | West Midlands Trains sub-brand |
| LNER | GR | |
| London Overground | LO | |
| London Underground | LT | |
| Lumo | LD | |
| Merseyrail | ME | |
| Network Rail | NR | |
| Northern Trains | NT | |
| North Yorkshire Moors Railway | NY | |
| Southeastern | SE | |
| Southern | SN | Govia Thameslink Railway (GTR) sub-brand |
| South Western Railway | SW | |
| Stansted Express | SX | Greater Anglia sub-brand |
| TfL Rail | XR | |
| Thameslink | TL | Govia Thameslink Railway (GTR) sub-brand |
| Trafnidiaeth Cymru/Transport for Wales | AW | |
| TransPennine Express | TP | |
| West Coast Railway Company | WR | |
| West Midlands Railway (WMR) | WM | West Midlands Trains sub-brand |
| Operator | Code | Notes |
|---|---|---|
| Anglia Railways | AR | |
| Arriva Rail North | NT | |
| Arriva Trains Merseyside | ME | |
| Arriva Trains Northern | AN | |
| Arriva Trains Wales | AW | |
| Central Trains | CT | |
| Connex South Central | CX | |
| Connex South Eastern | CX | |
| East Coast | GR | |
| East Midlands Trains | EM | |
| First Capital Connect | FC | |
| First Great Eastern | GE | |
| First Great Western | GW | |
| First Great Western Link | FK | |
| First Hull Trains | HT | |
| First North Western | FW | |
| First ScotRail | SR | |
| First TransPennine Express | TP | |
| Great North Eastern Railway (GNER) | GR | |
| Great Western Trains | GW | |
| Heathrow Connect | HC | Absorbed into TfL Rail on 19th May 2018 |
| Island Line Trains | IL | Brand name of South West Trains (SW), as of February 2007 |
| London Midland | LM | |
| Merseyrail Electrics | ME | |
| Midland Mainline | ML | |
| National Express East Anglia (NXEA) | LE | |
| National Express East Coast (NXEC) | GR | |
| Northern Rail | NT | |
| Northern Spirit | NS | |
| North Western Trains | NW | Rebranded to First North Western (FW) in March 1998 |
| Regional Railways | (RR) | Parent company - British Rail |
| ScotRail | SR | Brand revised as First ScotRail (SR) in October 2004; then renamed ScotRail in 2008 |
| Silverlink | SS | "Previously known as North London Railways" (from Wikipedia.org) |
| South Eastern Trains | SE | Publicly owned by the Strategic Rail Authority between 9th November 2003 and 1st April 2008 |
| South West Trains | SW | |
| Thames Trains | TT | |
| Thameslink | TR | 1997–2006 franchise |
| Valley Lines | VL | |
| Virgin CrossCountry | XC | |
| Virgin Trains (East Coast) | GR | |
| Virgin Trains (West Coast) | VT | |
| West Anglia Great Northern | WN | |
| Wales and Borders | WB | |
| Wales and West | WW | |
| Wrexham & Shropshire | WS |
Notes
- List correct as of June 2021.
- Codes shown in parentheses are not official; only used either in cases where an official does not exist or when it isn't known.
Last edited by Gwasanaethau on 17/11/2021 at 08:34