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

New feature! Site update notifications.

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 4 December 2025

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.

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. Lancashire council local government
  63. Landlab landscape architects
  64. Lenz Labs innovation consultancy
  65. Lionverge former infrastructure staff supplier
  66. London Midland former passenger train operating company
  67. MacRail Systems progress reporting and workforce attendance monitoring
  68. MHB Consultants consulting civil engineers
  69. Midlands Connect local government department
  70. Mott MacDonald consultant
  71. MTR Crossrail passenger train operating company
  72. Murphy Group infrastructure contractor
  73. Network Rail infrastructure owner
  74. Nexus Alpha transport information systems supplier
  75. Northern Rail former passenger train operating company
  76. NG Bailey infrastructure contractor
  77. OLE Limited electrification services
  78. Onsite water/drainage specialists
  79. Onwave digital networks
  80. OwenWilliams Railways former consultancy, now part of Amey
  81. Parkeon Transit Systems ticket vending machine manufacturer/maintainer
  82. Peeping Passenger Counts operations consultant
  83. Permanent Rail Engineering (UK) infrastructure installation and maintenance
  84. PRA-Rail Operations operations consultant
  85. Premtech Solutions Limited consultancy
  86. RailAdventure UK train operator
  87. The Railway Engineering Co Ltd consultancy
  88. Ramboll civil engineer
  89. RASIC technology consultant
  90. Ricardo Rail systems consultant
  91. RKG Partnership architect
  92. Rockshore real time information systems
  93. Royal BAM Group construction contractor
  94. RSSB safety and standards
  95. Scientifics chemical analyst
  96. SELRAP campaign group
  97. Severn Valley Railway heritage railway
  98. Siemens equipment manufacturer
  99. SKM Anthony Hunt consultancy
  100. SNC Lavalin consultancy formerly known as Interfleet Technology
  101. Southeastern Railway passenger train operating company
  102. Southern Railway passenger train operating company
  103. South Western Railway passenger train operating company
  104. South West Trains former passenger train operating company
  105. Stirling Geoenvironmental Ltd earthworks examinations
  106. TEF Gauging railway gauging services
  107. telent communications services
  108. Trackmaps infrastructure diagram publisher
  109. Tracsis plc operations and planning systems consultant
  110. Transport Design International light rail specialists
  111. Transport for London government department
  112. Transport for Wales/Keolis Amey Operations passenger train operating company
  113. Transport Scotland government department
  114. Travelogix data reporting software
  115. Trevor Patrick Partnership consultancy
  116. TSP Projects multi-disciplinary solutions
  117. University of Birmingham education establishment
  118. University of East Anglia education establishment
  119. University of Southampton education establishment
  120. Virgin Media O₂ telecommunications provider
  121. Vital Rail infrastructure contractor
  122. Volker Rail infrastructure services
  123. WSP consultancy
  124. WycheGnome passenger information consultancy
  125. XYZ Rail infrastructure contractor formerly known as Stobart Rail
  126. Yorcard smart ticketing

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… and something else last update 20 December 2025

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
GWR 153382 on an embankment
Random photo: GWR 153382 does its best to blend into the environment
GWR clock
Editor's self-indulgence: GWR branding 'in action'
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