Railway Codes and other data

A (hopefully) comprehensive listing

Additional information is always gratefully received, whether entirely new records (particularly historical records) or information to fill in gaps or correct errors, via the contact link under the Miscellaneous entry in the navigation bar above. Thank you.

[data] from Railway Codes, of course. Where else?

— A satisfied corporate user

The British railway is, for a variety of reasons, awash with acronyms and codes of various kinds. This web site sets out to explain some of these related to the infrastructure and to operational issues. Not included in this site are abbreviations of company names or information about trains themselves: this information is available elsewhere and the editor's main interest lies in infrastructure.

Taking Aspley Guise as an example, the codes BBM and MD140 apply to the route on which Aspley Guise station sits, and APG, 138000, ASPLEYG, and 62051 (ASPLY GSE) apply to the station itself. All of these codes mean different things, and are used in different ways. This site helps to explain these codes.

Also on this site are lists of pseudo-legal data. The first is a list of British railway services introduced under special legislation. This legislation allows operators to consider certain services as 'experimental' and withdraw them if considered necessary without going through full closure procedures. The second is a list of licences and licence exemptions issued by the Office of the Rail Regulator. There is a list of routes designated as community rail partnerships, and finally a table of franchises with associated dates.

Information about other assets such as signal box prefix codes, electrification mast codes, stations, depots and tunnel lengths is also available here.

For more information about day to day changes with Britain's railway infrastructure, please refer to the infrastructure section of the Railway Observer.

Most of the information contained in this site has taken many hours and letters to different companies to compile: it is hoped that you, the reader, will find it helpful to shed light on some of the codes found in railway documents. The records contained in this site are as complete as possible. If you are able to add to the data, please contact the editor.

Please feel free to quote this site. However, please credit it as your source. Feel free to add a link on your website to here.

The use of a reliable host and dedicated domain name is courtesy of a generous supporter, to whom the editor is indebted.

Identify this! last update 30 January 2026

Can you help the editor identify some old photographs? These are shown here; page updated occasionally.

Wanted

Your photographs! Alnmouth station was officially renamed in 2003 to include the line 'for Alnwick'. Can you supply an image that clearly shows the earlier succinct name sign, taken post privatisation (1 April 1994), please? It doesn't have to be directly of the sign; clearly legible but secondary to another subject is fine.

Your photographs! Hampstead Heath station sign was noted on 24 June 2000 with the line 'for Royal Free Hospital' (as distinct for the more recent 'alight for Royal Free Hospital'). Can you supply an image that clearly shows the earlier name sign, please?

Your photographs! Penshurst station sign was noted on 4 June 2002, in Connex colours, with the addition 'for Chiddingstone Causeway'. Can you supply an image that clearly shows the 'Causeway' element, please?

Railway uniform neck ties, specifically:

§ these purchased and promptly lost at Ashford station after the 24 August 2025 open day. Did you find them?

Reasonable costs paid: please contact the editor if you can help. Thank you.

Additionally, the editor has two uniform ties that are unidentified, shown here. Do you know which organisation issued them?

These pages are used by in alphabetical order:

Now over 120 corporate users external links open in new tab
  1. Advenza Freight former freight forwarder
  2. Aecom consultancy formerly known as Scott Wilson and URS
  3. AGH Engineering electrical and mechanical consultants
  4. Alphatek Hyperformance Coatings rail coatings
  5. Amey infrastructure services/consultancy
  6. Amtrain Midlands staff training and screening
  7. Arcadis consultancy
  8. Arriva Trains Wales former passenger train operating company
  9. Arup consultancy
  10. Aspin Foundations former earthworks contractor
  11. Association of Community Rail Partnerships government/pressure association
  12. AtkinsRéalis consultancy
  13. Babcock Rail infrastructure services
  14. Balfour Beatty Rail Projects infrastructure services
  15. BAM Nuttall construction contractor
  16. Barry Doe independent consultant
  17. Blue Cube Travel travel management
  18. Blue Tree Acoustics energy and acoustic consultant
  19. Bob Wilkes Railways railway operating consultants
  20. course tutor at Bromley Adult Education Centre education establishment
  21. Buckingham Group infrastructure contractor
  22. Carillion former infrastructure contractor
  23. Chiltern Railways passenger train operating company
  24. Coffey ground engineering/geotechnical
  25. Cogitare infrastructure optimisation consultancy
  26. Coombes vegetation management
  27. Cornerstone Information Systems travel industry IT solutions
  28. Costain infrastructure contractor
  29. Cotswold Rail former charter train and freight train operator
  30. cpc Project Services systems management
  31. Credo strategy consultant
  32. Crossrail infrastructure operator
  33. Cubic Transportation Systems consultancy formerly known as Serco Integrated Transport
  34. Datasys software solutions consultant, now part of Tracsis
  35. Delta Rail consultant
  36. Department for Transport government department
  37. East Midlands Trains former passenger train operating company
  38. Emmanuel Richard Consultants yield management consultancy
  39. ESL engineering and construction contractor
  40. Eurostar passenger train operating company
  41. Faithful+Gould construction project and cost management consultancy
  42. FENS Information Limited information services
  43. Filter Worldwide IT solutions
  44. Fone Alarm Installations customer information and monitoring
  45. Frankham Group multidisciplinary engineering consultancy
  46. Galliford Try infrastructure contractor
  47. GeoFurlong infrastructure consultant
  48. Graffica HERMES simulation software
  49. Govia Thameslink Railway passenger train operating company
  50. Great Western Railway passenger train operating company
  51. Haigh Rail infrastructure contractor
  52. HRS Services environmental services
  53. High Speed 2 infrastructure owner
  54. Hyder Consulting consultant
  55. Infotec customer information system designer/supplier
  56. ISC Best Practice CAD models for listed building and railway consents
  57. JCP consulting engineers
  58. Jacobs consultancy formerly known as Ch2MHill, formerly known as Halcrow
  59. J Murphy & Sons infrastructure contractor
  60. JNP Group consulting engineers
  61. Kier Rail infrastructure contractor
  62. KI Transport Consultancy transport consultancy
  63. Lancashire council local government
  64. Landlab landscape architects
  65. Lenz Labs innovation consultancy
  66. Lionverge former infrastructure staff supplier
  67. London Midland former passenger train operating company
  68. MacRail Systems progress reporting and workforce attendance monitoring
  69. MHB Consultants consulting civil engineers
  70. Midlands Connect local government department
  71. Mott MacDonald consultant
  72. MTR Crossrail passenger train operating company
  73. Murphy Group infrastructure contractor
  74. Network Rail infrastructure owner
  75. Nexus Alpha transport information systems supplier
  76. Northern Rail former passenger train operating company
  77. NG Bailey infrastructure contractor
  78. OLE Limited electrification services
  79. Onsite water/drainage specialists
  80. Onwave digital networks
  81. OwenWilliams Railways former consultancy, now part of Amey
  82. Parkeon Transit Systems ticket vending machine manufacturer/maintainer
  83. Peeping Passenger Counts operations consultant
  84. Permanent Rail Engineering (UK) infrastructure installation and maintenance
  85. PRA-Rail Operations operations consultant
  86. Premtech Solutions Limited consultancy
  87. RailAdventure UK train operator
  88. The Railway Engineering Co Ltd consultancy
  89. Ramboll civil engineer
  90. RASIC technology consultant
  91. Ricardo Rail systems consultant
  92. RKG Partnership architect
  93. Rockshore real time information systems
  94. Royal BAM Group construction contractor
  95. RSSB safety and standards
  96. Scientifics chemical analyst
  97. SELRAP campaign group
  98. Severn Valley Railway heritage railway
  99. Siemens equipment manufacturer
  100. SKM Anthony Hunt consultancy
  101. SNC Lavalin consultancy formerly known as Interfleet Technology
  102. Southeastern Railway passenger train operating company
  103. Southern Railway passenger train operating company
  104. South Western Railway passenger train operating company
  105. South West Trains former passenger train operating company
  106. Stirling Geoenvironmental Ltd earthworks examinations
  107. TEF Gauging railway gauging services
  108. telent communications services
  109. Trackmaps infrastructure diagram publisher
  110. Tracsis plc operations and planning systems consultant
  111. Transport Design International light rail specialists
  112. Transport for London government department
  113. Transport for Wales/Keolis Amey Operations passenger train operating company
  114. Transport Scotland government department
  115. Travelogix data reporting software
  116. Trevor Patrick Partnership consultancy
  117. TSP Projects multi-disciplinary solutions
  118. University of Birmingham education establishment
  119. University of East Anglia education establishment
  120. University of Southampton education establishment
  121. Virgin Media O₂ telecommunications provider
  122. Vital Rail infrastructure contractor
  123. Volker Rail infrastructure services
  124. WSP consultancy
  125. WycheGnome passenger information consultancy
  126. XYZ Rail infrastructure contractor formerly known as Stobart Rail
  127. Yorcard smart ticketing

Does your company use these pages? Let the editor know to be added to the list

Symbols used on these pages

= external link for further information opens in new tab = link to PDF opens in new tab

… and something else last update 26 January 2026

You will find a small collection of railway photographs on the editor's Flickr pages. It is hoped that you find them enjoyable and a little different to the usual 'front three quarters in countryside' views. Click on an image to go to the photos.

Photo collection
Full collection
Farnborough North station sign
Random photo: GWR IET memory stick
GWR clock
Editor's self-indulgence: GWR branding 'in action'
Subscribe to updates

railwaycodes.org.uk is not on social media