The new edition of Rail 123 includes more than 20,000 changes and updates from the 2021-2022 edition. Every loco, multiple unit HST, IET and coach, either National registered or preserved is given, with every vehicle listing providing name (if applied), fittings, owner, operator, livery, and operational depot.

Rail 123 is the only publication to list ALL vehicles in one easy to follow, colour coded list, showing operational and preserved units across the National network, preservation, and industrial, together with exported stock. Additionally, all ordered fleets for introduction up to end of 2023 are given, including HS2 trains.