page_title: InterCity 125
section_title: Re-engining and refurbishment
hierarchical_section_title: InterCity 125 / Developments and changes / Re-engining and refurbishment
caption_attribution_description: English: The interior of refurbished First Class aboard a First Great Western TF vehicle.
context_page_description: The InterCity 125 is a diesel-powered passenger train built by British Rail Engineering Limited between 1975 and 1982. Each set is made up of two Class 43 power cars, one at each end and a rake of Mark 3 carriages. The name is derived from its top operational speed of 125 mph. Initially the sets were classified as Classes 253 and 254.
  As of December 2019, InterCity 125s remained in service with Abellio ScotRail, CrossCountry, East Midlands Railway, Great Western Railway and Network Rail.
context_section_description: In 2005, the train leasing company, Angel Trains, initiated and led an industry-wide programme to replace the 30-year-old Paxman Valenta engines in the HST power cars with new MTU 16V 4000 engines.  The upgrade, which was part of a £110 million total investment made by Angel Trains on its fleet of High Speed Trains, included the re-powering and refurbishment of 54 HST power cars: those then on lease to GNER (now London North Eastern Railway) (23), First Great Western (26) and CrossCountry (5). Virgin CrossCountry planned a similar project in the early 2000s, but with the collapse of the programme the upgraded trainsets were sold along with their unupgraded stablemates.
  Additionally, many operators undertook some refurbishment of the Mark 3 carriages in the early 2000s. In view of the delay and change of direction of the HST2 programme, operators began to refurbish their HST fleets in 2006 – both by remotoring with the more modern MTU4000 diesel engine, and by refurbishing the carriage interiors. It was anticipated that these overhauls would give the HST at least another 10 years in front-line service.
caption: Refurbished Mark 3 coach First Class interior (First Great Western)
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