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| British Rail Class 170 Turbostar | |
|---|---|
.jpg) ANorthern Trains Class 170/4 atKnaresborough | |
 The interior of a refurbishedEast Midlands Railway Class 170 | |
| In service | 30 May 1999 – present |
| Manufacturer | |
| Built at | Derby Litchurch Lane Works |
| Family name | Turbostar |
| Replaced | |
| Constructed | 1998–2005 |
| Number built | 139 |
| Number in service | |
| Formation | 2 or 3 cars per unit |
| Owners | |
| Operators | |
| Depots | |
| Specifications | |
| Car body construction | Weldedaluminium,withsteel body ends[5] |
| Car length |
|
| Width | 2.69 m (8 ft 10 in)[6] |
| Height | 3.77 m (12 ft 4 in)[6] |
| Doors | Double-leaf sliding plug(2 per side per car) |
| Maximum speed | 100 mph (160 km/h)[7] |
| Prime mover(s) | 2 or 3 ×MTU 6R 183 TD 13H[8](one per car) |
| Engine type | Inline-64-stroketurbo-diesel |
| Power output | 315 kW (422 hp) per engine |
| Transmission | Voith T 211 rzzehydrokinetic(one per vehicle) |
| Acceleration | max. 0.5 m/s2 (1.6 ft/s2)[7] |
| Bogies |
|
| Braking system(s) | Electro-pneumatic (disc) |
| Safety system(s) | |
| Coupling system | BSI[9] |
| Multiple working | Within class, plus Classes14x,15x and172 |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in)standard gauge |
TheBritish Rail Class 170Turbostar is a Britishdiesel-hydraulic multiple unit passenger train designed and built byAdtranz, and later byBombardier Transportation, atDerby Litchurch Lane Works.
The Class 170 was derived from theBritish Rail Class 165 and166 DMUs, known as theNetworker Turbos, of the 1990s. The first units were introduced to service in May 1999, shortly after theprivatisation of British Rail; they have been commonly used to operate regional as well as long-distance services, and to a lesser extent suburban services. A total of 139 units were built, but some were later converted toClass 168 andClass 171 units. These trains are currently in use withCrossCountry,East Midlands Railway,Northern Trains andScotRail.
The Class 170diesel multiple unit (DMU) is a development of the design used in theBritish Rail Class 165 and166 DMUs known as theNetworker Turbos and built byBritish Rail Engineering Limited and later ABB Transportation before that company became part of Bombardier.
Notable features shared are the aluminium alloy frame andVoith transmission as well as the general body shape (the cab ends are similar to those of theClass 168, but not Class 165/166), interior design and door fittings. The final drive is sourced fromZF instead ofGmeinder and the diesel-engine supplier isMTU.[5]
The engine and transmission are located under the body. Onebogie per coach is powered. All coaches in the set are powered when in use (there are no unpowered trailers). The units can work in multiple with trains in the 15X series, i.e.Sprinters and 14XPacers (the latter empty only), and with other units of the same class. They are unable to operate in multiple with units in the 16X series due to different wiring arrangements.[10]
Seating arrangements are of both 2+1 (first class) and 2+2 (standard class) formation, and give a seated passenger capacity of between ~100 and ~200 per three-car set (depending on the specifications of the operator).[5] Two-car sets are also operated.
Class 170 units have been categorised into six (originally seven) sub-classes; the basic specifications remain the same (engine, length, transmission, etc.), the differences being the seating arrangements specified by the different operators. Because of the different interior fittings the sub-classes differ in weight from one another by a small amount, up to around 2 tonnes.[10]
All the sub-classes were built atDerby Litchurch Lane Works either underAdtranz orBombardier Transportation ownership.[10] The change of ownership occurred in 2001, but early Bombardier units (such as the 2002 two-car 170/2 Phase 2 units) still display ADtranz branding, such as on the window glazing, due to use of backstocked parts.
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Most units are owned byPorterbrook, although units 170416–424 are owned byEversholt Rail Group.[11] They are leased to thetrain operating companies.
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ScotRail was at one point the largest operator of the Class 170, with a fleet that formerly comprised 59 three-car sets but has since been reduced to 34 sets. All units are allocated toEdinburgh Haymarket depot.[12]
The first Class 170s in Scotland were 24 units built forScotRail (National Express) between 1999 and 2001 (170401–170424), which had first-class accommodation for use on ScotRail Express services (i.e. the Edinburgh–Glasgow Queen Street shuttle) and Aberdeen/Inverness–Glasgow/Edinburgh services. A further ten similar units (170425–170434) were built in 2003–2004 to complete the conversion of ScotRail Express services from Class 158 to Class 170 operation. By the time the second batch entered service the franchise had passed toFirst ScotRail.
Two standard-class only units were provided forStrathclyde Partnership for Transport (SPT) services from Glasgow Queen Street in 2001 (170470–170471), followed in 2004–2005 by seven more units for SPT (170472–170478) and 12 similar units for Edinburgh commuter services (170450–170461). In December 2008, six of the standard-class-only units (170450–170455) were fitted with first-class sections, and two more (170456 and 170457) were fitted with first class in December 2011.
A further four three-car sets (170393–170396) with first class accommodation and 'mini-buffets', were obtained fromHull Trains in 2005, bringing the First ScotRail Class 170 fleet up to a peak of 59 three-car sets. The former Hull Trains units were initially used on ScotRail Express services to Inverness, but by 2012 the buffets were out of use and all four units were converted to standard class only.[citation needed]
The nine units built for SPT services were delivered in SPT livery, whereas the rest of the fleet carried First ScotRail livery (170401–170424 having originally worn the National Express ScotRail 'swoosh' livery). In September 2008, theScottish Government's agencyTransport Scotland announced that all ScotRail trains (including from theStrathclyde Partnership for Transport) would eventually be repainted in a new blue livery with whiteSaltire markings on the carriage ends.[13]
In April 2015, the ScotRail franchise passed from First to Abellio, and nine units owned by Eversholt went off-lease. Five (170416–170420) remained in Scotland on short-term lease to Abellio ScotRail (albeit with ScotRail branding removed) until their transfer toEast Midlands Railway in 2020, whilst the other four units (170421–170424) were converted into Class 171s for their new operator Southern.[14]
As a result of the electrification of the Edinburgh to Glasgow Queen Street line in 2018 and the conversion of ScotRail Express services to Aberdeen and Inverness toHSTs in 2018–2019, the Class 170s are being displaced from ScotRail Express routes. Additionally, electrification of most of the Glasgow Queen Street (High Level) commuter lines and of the Edinburgh to Dunblane route will see Class 170s displaced from these services once theClass 385 EMU fleet is fully operational. Some of the surplus Class 170s will be cascaded to other ScotRail services replacing olderClass 156 and158 units, but 16 units were transferred toArriva Rail North (170453–170461 and 170472–170478). The first four of these units moved to Northern in March 2018, followed by a further four in August 2018.[15]
CrossCountry currently operates 29 Class 170 Turbostars (seven two-car and 22 three-car) on services between Cardiff Central and Nottingham, and between Birmingham, Leicester, and Stansted Airport.[16] After having been acquired fromCentral Trains in 2007 (as 13 two-car and 16 three-car units, but since reconfigured - see below), these units were refurbished in 2008, with the then-three-car units repainted at Marcroft Engineering,Stoke-on-Trent, the then-two-car units atEWS'Toton depot and the interiors done by Transys Projects,Clacton-on-Sea including the fitting of first-class seating to the Class 170/5s and 170/6s.[17][18]
In 2021, the centre cars from the six formerly three-car exWest Midlands Trains (WMT) 170s were transferred to CrossCountry and inserted into six of its formerly two-car units,[19] turning them into three-car units while retaining the CrossCountry driving vehicles' first class, due to the ex-WTR driving vehicles being standard class-only (East Midlands Railway had leased the aforementioned ex-WMT units, but only required two-car units from that batch, therefore CrossCountry was able to utilise the surplus centre cars).[20][21] This resulted in a reconfiguration of CrossCountry's 29 170s from their previous 13 two-car and 16 three-car units, to their current seven two-car and 22 three-car units. The extra centre cars were re-liveried and internally refurbished to match the units they were inserted into.
In February 2025, 170101, the first CrossCountry 170 to receive the operator's second, mid-life refurbishment, re-entered service. This refurbishment includes an exterior repaint in a new livery, an interior repaint and new seats (including the replacement of the former first class 2+1 seating - declassified since late 2024 - with 2+2 seating, which also makes up for the wheelchair and bicycle spaces now being separate rather than shared). It also includes new tables and carpets, full-length installation of 3-pin AC power sockets and USB DC power sockets of types A and C, new interior passenger information screens and new CCTV and passenger counting, as well as 'refreshed' toilets.[22][23]
Arriva Rail North began operating the Class 170 in 2018, with a total of 16 three-car units (170453-170461 and 170472-170478) received fromAbellio ScotRail by January 2019. These can now be seen operating services between Sheffield and Scarborough via Hull and have diagrams around the Harrogate Loop, on which they share duties with Class 158 DMUs. The units are maintained atNeville Hill TMD andBotanic Gardens TMD, and receive light maintenance at Sheffield.
On 1 March 2020, these units transferred to new operatorNorthern Trains.
East Midlands Railway currently operates the largest fleet of 170s, which consists of 43 total two-car and three-car sets, even though it has only been a 170 operator since 2020.
From 23 March 2020, East Midlands Railway received its first two Class 170 units in the form of three-car 170416 and 170417, when they moved fromAbellio ScotRail. The former was seen in EMR livery on 30 April 2020.[24]
Unit 170417, namedThe Key Worker, was the first unit to enter service, doing so on 2 November 2020 on the Robin Hood line, as part of EMR's soft launch of the class.[25][26]
Alongside units 170418–170420 (also from ScotRail), as EMR had planned to become the largest operator of the Class 170, a further 23 units arrived fromWest Midlands Trains as well as 12 fromTransport for Wales Rail. The 170s have replaced units of classes153 and156.[24]
In September 2022, threeClass 171s, having been reformed to three-car formations and renumbered to 170422–170424, transferred fromSouthern to East Midlands Railway. They were then renumbered with 1709xx unit numbers before entering service, in order to emphasise the difference between them and the rest of the fleet, as they had Dellner couplers rather than BSI couplers, so they were not compatible with the rest of the fleet.[27] They regained their identities as 170/4s when BSI couplers were fitted in May 2023 and they can now work with the rest of the fleet instead of being on self contained diagrams.[28]
A refurbishment program for the East Midlands units are ongoing, with the first unit completed its refurbishment and re-entered service.[29]
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Midland Mainline (MML) was the first operator to order Turbostars, the first being delivered in November 1998 and entering service in May 1999.[30] The Class 170/1 units were built immediately after theClass 168/0 units were built forChiltern Railways. MML ordered a fleet of 17 two-car Class 170 units, although the first ten were subsequently made up of three cars each instead. These were numbered 170101–117. The units were introduced on stopping services fromLondon St Pancras toLeicester,Derby andNottingham. They were also used on summer Saturday services from London toYork, which later became a year-round service with summer extension toScarborough. Class 170s were also used on direct services between London St Pancras andMatlock, these services ended upon the replacement of the Class 170s with newClass 222Meridian units due to weight restrictions on theDerwent Valley line to Matlock.
In 2004, Midland Mainline introduced new Class 222Meridian units, which started to replace theTurbostars. As a result, the fleet was transferred to sister companyCentral Trains. Ten units (170101–170110) are three-car units, and the remaining seven units (170111–170117) are two-car units. As with the three spot-hire units from Porterbrook, these 17 units had first-class accommodation, which was declassified.
Southern obtained six two-car Class 170/7 units, along with six four-carClass 171/8 units, in 2003 to replace its slam-doorClass 205 andClass 207 units on services on theMarshlink Line andOxted Line toUckfield.
Southern later[when?] fitted these units with theDellner type coupler used on its Class 171s, reclassifying its two-car units asClass 171/7, replacing the standard BSI coupler fitted to Class 170s. This was done to allow them to couple toClass 377s in an emergency.
Southern later[when?] acquired 170392 from South West Trains, which became its tenth four-car, 171730. This unit had already carried Southern livery, being ordered as an add-on to a Southern order to save costs, and was delivered accordingly in Southern livery as 170727. It was renumbered and reliveried at Ashford Chart Leacon Works before entering traffic.
At the end of theFirst ScotRail franchise in March 2015, 170416 to 170424 were returned to Eversholt Rail Group. The first five units then remained on hire toAbellio ScotRail via a sublease arrangement until March 2020, while 170421 to 170424 moved toWolverton Works in April 2015. They were overhauled and converted to Class 171s intended for Southern. Following issues with the conversion and reliability issues, the remaining units were then handed back to Eversholt Rail Group where they were then re-leased toEast Midlands Railway.[14][31] Two became two-car 171/2s and two four-car Class 171/4s.[32] All four were returned to Eversholt in 2022 and leased to East Midlands Railway. Having been reformed back into their original three-carriage formations, the first three were transferred in September 2022. They will be converted back to Class 170s and resume their original identities, while the fourth will remain on sublease toGovia Thameslink Railway.[33][34]
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Hull Trains began itsLondon King's Cross to Hull services in September 2000 using Turbostars, initially with four sets on short-term lease fromAnglia Railways. In 2004, it received four of its own three-car Class 170/3 units, and returned the original units to Anglia.
In 2005, following its acquisition byFirstGroup, Hull Trains received four newClass 222/1Pioneer units and transferred the Turbostars to its sister companyFirst ScotRail.
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South West Trains (SWT) acquired a fleet of eight two-car Class 170/3 units in 2000 (later to nine units supplemented by ex-Southern 170392), to supplement its existingClass 159 fleet. Units operated onLondon Waterloo toSalisbury,Reading toBrighton,Southampton local services, and occasionally on services toExeter St Davids, though this was not a regular route for these units, as they do not feature end gangways, making it difficult to provide trolley services, and they lacked selective door opening for the short platforms at stations on the route west of Salisbury. All but one of these units were transferred to First TransPennine Express at the end of 2006, in exchange for someClass 158 Express Sprinters. Unit 170392 was transferred back to its original intended operator Southern and has since been reclassified and renumbered from 170392 to 171730.
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Central Trains operated a fleet of 53 Class 170 units from various subclasses. In 1999, Central received its first batch of twenty-three two-car Class 170/5 and ten three-car Class 170/6 units. These were used to replaceClass 156 units on various longer-distance services.
From late 2004, Central also took three Class 170/3 on lease fromPorterbrook. Units 170397–8 are three-car units and 170399 is a two-car unit. All three of these units contained first-class accommodation, which was declassified (allowing standard-class use throughout the train), asfirst class travel was not provided on Central Trains services. The two three-car units' interiors were of Central Trains style, except the MML-style first class, and the two-car unit had a South West Trains interior. After theCentral Trains franchise ended, the two three-car units (170397 and 170398) remained with the new operator, CrossCountry. The one two-car unit was returned to Porterbrook, which subsequently leased it toFirst TransPennine Express who renumbered the unit to 170309.
All Class 170 units in service with Central were used on a variety of services (mostly long-distance) includingBirmingham–Stansted Airport,Nottingham–Cardiff and Birmingham–Leicester. Class 170 units have been replaced byClass 350Desiro units on Birmingham New Street toLiverpool Lime Street services.
When Central Trains lost its franchise in 2007, 23 of Central Trains' units (17 two-coach and six three-coach) were transferred toLondon Midland, which took over the West Midlands franchise and continued to use Class 170s for services on theChase Line, Birmingham to Hereford via Bromsgrove Line and Shrewsbury services. 29 out of the remaining 30 units (including the ex-Midland Mainline units and two out of the three spot hire units) were transferred toCrossCountry, which took over the Cardiff-Birmingham-Nottingham and Birmingham-Leicester-Stansted Airport services.
One of Central Trains' 170s (170399) went toFirst TransPennine Express and was subsequently renumbered 170309;East Midlands Trains did not receive any, despite taking over the previously Class-170-operatedLiverpool-to-Norwich route. This route is now operated by refurbishedClass 158 units.
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From late 2006 to 2016,First TransPennine Express operated nine Class 170s, used on theManchester Piccadilly toHull route. Originally,Class 185s were set to operate the route, but a combination of weight-restriction problems on theSelby to Hull Line, chronic overcrowding on several of the company's services and the government reducing the amount of money available to First TransPennine Express for new trains resulted in Class 170s coming into service.
First TransPennine Express received eight Turbostars fromSouth West Trains, 170301–308 at the end of 2006 and the start of 2007, as well as 170399 fromCentral Trains in November 2007, which was renumbered 170309.
From September 2009, two Class 170s were used Sundays to Thursdays on the Cleethorpes–Manchester Airport service.
The units were maintained by Bombardier Crofton. The 170s have since been fully refurbished to includeCCTV, power sockets throughout, replacement carpets and seat covers and the removal / declassification of one of the two first-class sections, providing more seats. The work was carried out by Transys atClacton-on-Sea.
However, in March 2014 it was revealed that the nine Turbostars would move toChiltern Railways.[35] MPStephen Hammond revealed on 12 March 2014 that all the Class 170/3s would remain with First TransPennine Express until the May 2015 timetable change, when Chiltern would take five of the 170s with the remaining four remaining with First TransPennine Express until the end of the franchise in March 2016 later changed to 8 July 2016. Upon delivery, the Class 170s were modified inBrush Traction to allow them to be used with Chiltern's existingClass 168 units, and were subsequently reclassified as Class 168/3s.[36] Today, the unit numbers are 168321–168329.[citation needed]
However, it was confirmed in November 2018 thatTransPennine Express would be hiring one Class 170 per day from Northern to run services on the Manchester/Leeds and Huddersfield local services, to allow more Class 185s to be used on other busier services until the new Nova Fleets arrive in 2019. This arrangement ended in May 2019, when Northern's subleased Class 185 units returned to TPE.
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Anglia Railways ordered two batches of Turbostars. The first batch of eight three-car Class 170/2 units were built between 1999 and 2000 forLondon Liverpool Street toIpswich,Norwich,Lowestoft andBury St Edmunds services. These supplemented the existingClass 86 locomotive-hauled trains from London to Norwich. Four of these units were later hired toHull Trains from 2000–2004, before that company acquired its own Turbostars.
Other units, including the spot-hire set 170399, were used on Anglia's short-lived Norwich toBasingstoke 'London Crosslink' service. In 2002, Anglia introduced a newCambridge to Norwich direct service, and acquired four two-car units dedicated to working these services.
In 2004, the Greater Anglia franchise was won byNational Express subsidiary One, rebranded asNational Express East Anglia in 2008, and passed ontoAbellio Greater Anglia in 2012. Since then, two-car Turbostars have been used for the Cambridge to Norwich route, and also on new through services including Cambridge (via Ipswich), Bury St Edmunds (via Ipswich),Peterborough (via Ipswich) and Lowestoft (via Ipswich and East Suffolk Line or Ipswich and Norwich) -London Liverpool Street via Ipswich, although with a new timetable all Class 170 London services ended in December 2010, in favour of connecting branch line trains with GEML expresses.
The three-car trains used to include a buffet and larger first-class area, but because more seating was needed, the buffet area has been removed and the number of first-class seats reduced.
In late 2019, these units were displaced byClass 755s and transferred toTransport for Wales by February 2020.
West Midlands Trains (WMT) operated twenty-three Class 170 Turbostars, which they had inherited from their predecessorLondon Midland in 2017, on services on the Birmingham to Hereford via Bromsgrove Line, and Birmingham - Shrewsbury via Telford Central services.
WMT replaced all of its 170s with 26 newClass 196Civity units from late 2022. However, these 170s had already started moving to East Midlands Railway (EMR) in 2021, with the first moving in February 2021.[37] The final four ex-WMT 170s joined EMR in May 2023.[38]
For the vast majority of the duration that these 23 170s were operated on the West Midlands franchise, they were formed as 17 two-car 170/5s and six three-car 170/6s. However, in 2021, before they had all transferred to EMR, the centre cars of what were WMT's six Class 170/6s moved toCrossCountry, to enable it to strengthen some of its previously-two-car units, meaning that EMR received the ex-WMT 170s as 23 two-car 170/5s, as they only leased the driving cars (with CrossCountry's lengthened units changing subclass from 170/5 to 170/6).[39]
In September 2019,Transport for Wales received three Class 170/2s (one three-car unit and two two-car units) fromAbellio Greater Anglia, with driver training following.[40] In November 2019, three more units (two three-car and one two-car) transferred depots fromNorwich Crown Point toCardiff Canton, with a further four three-car units delivered in December 2019, the last three-car unit delivered in January 2020 and the last two-car unit delivered in February 2020. This meant thatTransport for Wales Rail leased the entire 12-strong 170/2 subclass of eight three-car units and four two-car units.
These were the first Class 170s on theWales & Borders franchise and they were used onservices between Cardiff / Bridgend and Ebbw Vale, andservices between Maesteg and Cheltenham/Gloucester.[41] On 12 December 2019, three-car unit 170202 worked TfW Rail's first Class 170 passenger services (between Bridgend and Ebbw Vale Town via Cardiff Central) and the units started to enter service in multiple quantities on 16 December 2019, with 5 units (three three-car and two two-car) running in passenger service on that day. All units had entered service by April 2020 when three-car unit 170206 was the last to enter service.
These were originally due to stay with TfW for the duration of the franchise (albeit working different services once their brand new trains were in service), however, following a revision of TfW's long-term rolling stock strategy, it was later announced all were to transfer toEast Midlands Railway.[42][43] The two-car units transferred first, followed by the three-car units. 170208 was the last to leave, on 29 January 2024.[citation needed]
| Class | Operator | Qty. | Built | Cars per unit | Unit numbers | Notes |
|---|---|---|---|---|---|---|
| 170/1 | CrossCountry | 10 | 1998–1999 | 3 | 170101–170110[44] | |
| 7 | 2 | 170111–170117[44] | ||||
| 170/2 | East Midlands Railway | 8 | 1999 | 3 | 170201–170208[1] | |
4 | 2002 | 2 | 170270–170273[1] | |||
| 170/3 | Converted toClass 168 | 9 | 2000 | 170301–170309 | ||
| Converted toClass 171 | 1 | 170392 | ||||
| ScotRail | 4 | 2004 | 3 | 170393–170396[44] | ||
| CrossCountry | 2 | 2002 | 170397–170398[1][44] | |||
| 170/4 | ScotRail | 17 | 1999–2001 | 170401–170415, 170470–170471[44] | ||
| East Midlands Railway | 8 | 170416–170420, 170422–170424 | Units numbered 170422–170424 were formerlySouthernClass 171s | |||
| Converted toClass 171 | 1 | 170421 | To remain withGTR asClass 171[45] | |||
| ScotRail | 10 | 2003–2004 | 170425–170434 | |||
| 3 | 2004–2005 | 170450–170452[44] | ||||
| Northern Trains | 16 | 170453–170461, 170472–170478[44] | ||||
| 170/5 | East Midlands Railway | 23 | 1999–2000 | 2 | 170501–170517, 170530–170535[38][44] | Units numbered 170530–170535 were formerly three-car units numbered 170630–170635 until 2020–2021[citation needed] |
| 170/6 | CrossCountry | 10 | 3 | 170618–170623, 170636–170639[1][44] | Units numbered 170618–170623 were formerly two-car units numbered 170518–170523 until 2020–2021[citation needed] | |
| 170/7 | Converted toClass 171 | 6 | 2003-2004 | 2 | 170721–170726 |
A number of units have been named:
