page_title: Great Western Railway (train operating company)
section_title: Class 43 + Mark 3 Class 255 Castle
hierarchical_section_title: Great Western Railway (train operating company) / Rolling stock / West of England services / Class 43 + Mark 3 Class 255 Castle
caption_attribution_description: English: Great Western Railway power cars 43094 and 43194 with a four-car ';Castle Class' train from Taunton to Cardiff passing through Stapleton Road station in Bristol.
context_page_description: Great Western Railway is a British train operating company owned by FirstGroup that operates the Greater Western railway franchise. It manages 197 stations and its trains call at over 270. GWR operates long-distance inter-city services along the Great Western Main Line to and from the West of England and South Wales, inter-city services from London to the West Country via the Reading–Taunton line and the Night Riviera sleeper service between London and Penzance. It also provides commuter and outer-suburban services from its London terminus at Paddington to West London, the Thames Valley region including parts of Berkshire, parts of Buckinghamshire and Oxfordshire; and regional services throughout the West of England and South Wales to the South coast of England. GWR will also be providing and maintaining the new fleet for Heathrow Express from May 2020.
  The company began operating in February 1996 as Great Western Trains, as part of the privatisation of British Rail. In December 1998 it became First Great Western after FirstGroup bought out its partners' shares in Great Western Holdings.
context_section_description: Great Western Railway will be retaining 24 power cars and 48 carriages from its former High Speed Train fleet to form 12 'Castle' 2+4 sets. They are branded as Class 255 sets and will be for use on multiple services between Cardiff, Exeter and Penzance. All power cars being retained will have new nameplates, named after castles from across the area that GWR serve. The sets are progressively being fitted with automatic doors and controlled emission toilets, to allow their operation beyond 2020, at Doncaster Works. Due to a delay in refurbishing the Castle sets, slam door 2+4 sets known as 'Classic' sets were used until the end of 2019.
  Until 2017, GWR operated the vast majority of its long-distance services with a fleet of 58 InterCity 125 High Speed Train sets, each consisting of eight Mark 3 coaches sandwiched between two Class 43 locomotives. GWR operated the largest InterCity 125 fleet, owning five sets outright; the rest were leased from Angel Trains and Porterbrook. From 2009 to 2012 (when Class 180s were reintroduced on the Cotswold line) all the company's intercity services were worked by HSTs except the Night Riviera sleeper service between London Paddington and Penzance. From late 2017, following the completion of electrification from Hayes & Harlington to the west of England, intercity services gradually became operated by Class 800 IETs, although a few peak services remained operated by HSTs until early 2019. GWR continued to use HSTs on services to Exeter, Plymouth and Penzance until May 2019, when they were all withdrawn in favour of Class 802 units.
  The youngest Class 43 locomotive dated from 1982. After a successful trial by Angel Trains and FGW in 2004, two power cars received new MTU engines while two received new Paxman VP185s, fitted by Brush Traction of Loughborough. The MTU engine proved the better option, both for reliability and for emissions, resulting in FGW, Brush and Angel Trains starting the HST Modernisation programme. The last power cars to be re-engineered were released in April 2008, while several other companies' HSTs have now all undergone a similar programme.
  GWR's High Speed Train fleet were refurbished by Bombardier in Derby and Ilford between 2006 and 2008, with leather seats introduced in first class, redesigned toilets, a redesigned buffet, and at-seat power points. The company opted for mainly airline seats, giving more seats per train.
  Following the Southall and Ladbroke Grove rail crashes, GWR requires its HSTs to have automatic train protection and Automatic Warning System safety systems in operation. If either is faulty, the train is not used.
caption: A Class 255 Castle set hauled by HST Class 43 powercars passes through Stapleton Road on the way to Cardiff Central
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