British Rail Class 800

British Rail Class 800 IET/Azuma
A London North Eastern Railway Class 800 at Arbroath
The standard-class interior of a Great Western Railway Class 800 unit
Stock type	Electro-diesel multiple unit
In service	16 October 2017 – present
Manufacturer	Hitachi Rail
Built at	Kasado Works, Kudamatsu, Japan Newton Aycliffe Manufacturing Facility, England
Family name	A-train
Replaced	Class 180 InterCity 125 InterCity 225
Constructed	2014–2018
Entered service	16 October 2017 (GWR) 14 May 2019 (LNER)
Number built	80 (36 × 800/0, 13 × 800/1, 10 × 800/2, 21 × 800/3)
Formation	5 cars per 800/0 and 800/2 unit: DPTS-MS-MS-MC-DPTF 9 cars per 800/1 and 800/3 unit: DPTS-MS-MS-TS-MS-TS-MC-MF-DPTF
Fleet numbers	800/0: 800001–800036 800/1: 800101–800113 800/2: 800201–800210 800/3: 800301–800321
Capacity	800/0: 326 seats (36 first class, 290 standard) 800/1: 611 seats (101 first class, 510 standard) 800/2: 302 seats (48 first class, 254 standard) 800/3: 650 seats (70 first class, 580 standard)
Owners	Agility Trains
Operators	Great Western Railway London North Eastern Railway
Depots	GWR: North Pole Stoke Gifford Swansea Maliphant LNER: Bounds Green Craigentinny Doncaster Carr Neville Hill
Lines served	East Coast Main Line Great Western Main Line
Specifications
Car body construction	Aluminium
Train length	5-car units: 129.7 m (425 ft 6 in) 9-car units: 233.7 m (766 ft 9 in)
Car length	Driving vehicles: 25.850 m (84 ft 9.7 in) Intermediate vehicles: 26.000 m (85 ft 3.6 in)
Width	2.7 m (8 ft 10 in)
Doors	Single-leaf pocket sliding (2 per side per car)
Maximum speed	125 mph (200 km/h)
Weight	5-car units: 243 tonnes (239 long tons; 268 short tons) 9-car units: 438 tonnes (431 long tons; 483 short tons)
Axle load	Motor cars: 15 tonnes (14.8 long tons; 16.5 short tons) Trailer cars: 13 tonnes (12.8 long tons; 14.3 short tons)
Traction system	Hitachi IGBT
Prime mover(s)	3 or 5 × MTU 12V 1600 R80L (3 per 5-car unit, 5 per 9-car unit)
Engine type	V12 four-stroke turbo-diesel with SCR
Displacement	21 L (1,284 cu in) per engine
Power output	Per engine: GWR: 700 kW (940 hp) LNER: 560 kW (750 hp)
Acceleration	0.7 m/s2 (1.6 mph/s)
Deceleration	Service: 1.0 m/s2 (2.2 mph/s) Emergency: 1.2 m/s2 (2.7 mph/s)
Electric system(s)	25 kV 50 Hz AC overhead
Current collector(s)	Pantograph
UIC classification	5-car units: 2′2′+Bo′Bo′+Bo′Bo′+Bo′Bo′+2′2′ 9-car units: 2′2′+Bo′Bo′+Bo′Bo′+2′2′+Bo′Bo′+2′2′+Bo′Bo′+Bo′Bo′+2′2′
Wheels driven	5-car unit: 24 9-car unit: 40
Braking system(s)	Electro-pneumatic (disc) and regenerative
Safety system(s)	AWS BR ATP (GWR units only) ETCS TPWS
Coupling system	Dellner 10
Multiple working	Within class and Class 801 and Class 802
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge

The British Rail Class 800, branded as the Intercity Express Train (IET) by Great Western Railway (GWR) and Azuma by London North Eastern Railway (LNER) is a type of bi-mode multiple unit train built by Hitachi Rail for GWR and LNER. The type uses electric motors powered from overhead electric wires for traction, but also has diesel generators to enable trains to operate on unelectrified track. It is a part of the Hitachi AT300 product family.

The Class 800 was developed and produced, alongside an electric-only Class 801 variant, as part of the Intercity Express Programme (IEP) to procure replacements for the InterCity 125 and InterCity 225 fleets of high speed trains. The trains were manufactured by Hitachi between 2014 and 2018, being assembled at Hitachi's Newton Aycliffe Manufacturing Facility using bodyshells shipped from the company's Kasado Works in Japan. Similar bi-mode units have also been produced by Hitachi as Classes 802, 805, and 810.

The Class 800 trains came into service on the Great Western Main Line on 16 October 2017, while the first examples on the East Coast Main Line were put into service on 15 May 2019. Early operations have been troubled by fatigue cracking and corrosion on the aluminium vehicle body shells, particularly on the yaw dampers.

Background

Main article: Intercity Express Programme

Class 800 of LNER (left) next to a InterCity 125 of CrossCountry (right) at Leeds

As part of the UK Government's Intercity Express Programme (IEP), the Class 800 units were built as partial replacements for the InterCity 125 trains which at the time operated services on the Great Western Main Line and the East Coast Main Line, as well as the InterCity 225 trains which currently operate services on the East Coast Main Line. The scheme drew heavily upon the preceding British Rail Class 395 high speed trains produced for Southeastern. A total of 80 train sets have been constructed, comprising 36 five-car and 21 nine-car units intended for operation with Great Western Railway (GWR), along with 10 five-car and 13 nine-car with London North Eastern Railway (LNER).

In March 2016, Virgin Trains East Coast announced that its trains would carry the brand name Azuma, a Japanese word for "East". During June 2016, GWR announced that its trains would be known as Intercity Express Trains. However, due to the early demise of Virgin Trains East Coast, they would not operate the new trains, which entered service with successor London North Eastern Railway. Even so, the Azuma brand has been retained by LNER.

In July 2016, it was revealed that GWR's intended fleet of Class 801 units were to be converted from pure EMU to bi-mode due to delays in the electrification. Subsequently, these were reclassified as Class 800/3. As a part of this reconfiguration, the original 1.35 m³ (300 imp gal) fuel tanks were replaced with larger capacity 1.55 m³ (340 imp gal) tanks.

Design

The Class 800 train is a high speed bi-modal multiple unit (BMU). The traction system comprises electric motors that are alternatively capable of drawing power from electrified overhead lines where available, or of using electricity produced by onboard underfloor diesel generators when travelling beyond the current electrified network. As per the train specification, the changeover between modes can occur at line speed for minimal service impact. As part of the Great Western Main Line order was originally for Class 801s, all Great Western franchise units have the possibility to be converted to electric-only operation by removal of the diesel engines.

Class 800 pantograph in lowered position

Hitachi designed the rolling stock for conformance with the latest European standards as of 2014, including the Technical Specifications for Interoperability, and UK railway standards. Furthermore, a high level of flexibility was pursued as to allow the type to be operated on numerous lines with different infrastructure, both in the present and the foreseeable future, such as variable passenger demand and the rollout of electrification. The front end cars, which feature a collision safety structure compliant with the latest European standards, incorporate an automatic coupling system along with measures to reduce both air resistance and noise.

The driving cab of the Class 800 is provisioned with a variety of physical switches and monitors. The design of which is not only compliant with relevant standards at the time of design, but also shaped by feedback received from drivers as part of Human Factors engagement, in order to provide a usable and reliable cab design. The train crew are assisted by the Train Control and Management System (TCMS), which runs on an ethernet-based communication system. Amongst other functions, it provides onboard information systems such as the seat reservation system, public address, and passenger information system, as well interfacing with the cab displays, on-train data recorder, and 3G/4G communications.

It has been outfitted to work with various signalling systems, including the European Train Control System (ETCS) level 2, which satisfies safety integrity level 4 requirements. For compatibilities with legacy signalling systems, it is also provisioned with apparatus for the Train Protection & Warning System (TPWS), Automatic Warning System (AWS), and Automatic Train Protection (ATP) system. Train information can be shared between ETCS, TCMS, and the GSM-R wireless communication system to simplify data entry. The train communicates in realtime with wayside systems, transmitting from the data recorder and receiving timetables and seat allocation data, amongst other material. Location tracking via GPS is used to automatically control selective door operation (where stations are shorter than the trains), guide drivers in efficiently operate the train to best suit the route, and provide information to passengers.

The Class 800 is capable of driver-only operation when required, however, virtually all services have a guard on board, one exception being the Oxford and Bedwyn services operated by GWR, where drivers use the in-cab monitors to close the doors without a guard. When a guard is on board, door releases are still controlled by the driver, while the guard is responsible for closing the doors using the control panels in the vestibule areas; the driver will then carry out a secondary check of the side of the train before departure using the in-cab monitors.

Traction and generator units

Despite their underfloor positioning, the generator units (GU) feature a V12 engine. Incorporated as a single package, the GU includes the diesel engine, generator, radiator, and other subsystems, such as exhaust cleaning measures compliant with the Stage IIIB European Union exhaust emission standard. Elements external to the GU include the traction converter, fuel tank, automated fire protection system (using high pressure nitrogen gas), and braking. The auxiliary power system is powered directly from the direct current stage of the traction system. They are operated in parallel to provide greater redundancy. The power supply converter is designed to work with both sources of power, avoiding the need for a separate converter for each mode, thus reducing weight and complexity.

The GU is installed on vibration-isolating mountings, and fitted with side-mounted cowls to reduce external noise. Heat management measures include thermal insulation around key areas such as cable ducts. According to Modern Railways magazine, the limited space available for the GUs is responsible for them being prone to overheating. It claimed that, on one day in summer 2018, "half the diagrammed units were out of action as engines shut down through overheating".

The Class 800 and Class 802 bi-mode are equipped with three GU per five-car set and five GU per nine-car set; a five-car set has a GU situated under vehicles 2/3/4 and a nine-car set has a GU situated under vehicles 2/3/5/7/8. In comparison, the electric-orientated Class 801 features a single GU for a five to nine-car set, which provides emergency power for limited traction and auxiliaries if the power supply from the overhead line fails. By adding or removing GUs, a Class 800 can be converted into a Class 801 and vice versa. Active limiters are present that prevent the train from exceeding its peak service speed of 125 mph (200 km/h).

Introduction into service

GWR Class 800 (right) next to its predecessor InterCity 125 (left) at London Paddington

The Class 800 trains came into service on the Great Western Main Line on 16 October 2017, under the brand name Intercity Express Train (abbreviated to IET). Teething problems surfaced on the inaugural service, the train not only ran late but one of the carriages suffered an air conditioning unit failure that discharged water into the passenger area. Following further issues, the units were withdrawn from service on 19 October for the rest of the day, re-entering service during the next day.

At one point, the type were due to enter service on the East Coast Main Line from December 2018. The launching operator on the East Coast became London North Eastern Railway (LNER) following Virgin Trains' decision to return the franchise to the government; the introduction was postponed by six months on account of the train's electro-magnetic emissions, which had reportedly caused problems with signals and other elements of lineside equipment.

On 30 June 2016, GWR's test unit (800004) ran from Reading to London Paddington carrying invited dignitaries.

On 14 June 2017, GWR unit 800003 was named Queen Elizabeth II by the monarch herself in a ceremony held at Paddington Station. The Queen had arrived at Paddington on the unit, travelling from Slough on the 175th anniversary of the first ever train journey by a reigning monarch, made on the same route by Queen Victoria. The name is carried in the form of a decal, rather than the more traditional cast metal plate; the name Queen Victoria is borne on the other end of the unit.

On 15 May 2019, the first Class 800 came into service on the East Coast Main Line under the brand name 'Azuma'. The type was initially worked on Leeds, Hull, and Newark services. On 1 August 2019, the first Class 800 performed the Edinburgh to King's Cross run on the Flying Scotsman service.

Fleet details

Subclass	Operator	Qty.	Year built	Cars per unit	Unit nos.
800/0 Intercity Express Train	Great Western Railway	36	2014–2018	5	800001–800036
800/1 Azuma	London North Eastern Railway	1	2015	9	800101
		12	2018		800102–800113
800/2 Azuma		10		5	800201–800210
800/3 Intercity Express Train	Great Western Railway	21	2017–2018	9	800301–800321

Illustrations

Illustration of a GWR Class 800/0 Intercity Express Train (IET)

Illustration of a LNER Class 800/1 Azuma

Named units

"Captain Tom Moore" name applied to unit 800025

Great Western Railway's Class 800 and 802 units are being named after "inspirational people" who have influenced the regions that the company serves.

GWR Class 800 units with special names or liveries

Unit number	Date	Name	Ref.
Named trains
800003	13 June 2017	Queen Elizabeth II and Queen Victoria
800004	30 June 2016	Isambard Kingdom Brunel and Sir Daniel Gooch
800005	4 July 2023	Aneurin Bevan NHS 1948-2023
800008	7 June 2018	#trainbow and Alan Turing
800009	7 March 2018	Sir Gareth Edwards and John Charles
800010	10 January 2018	Michael Bond and Paddington Bear
800014	8 March 2019	Megan Lloyd George and Edith New
800019	22 June 2018	Johnny Johnson and Joy Lofthouse
800020	18 April 2018	Bob Woodward and Elizabeth Ralph
800022	24 June 2021	Tulbahadur Pun
800023	18 April 2019	Kathryn Osmond and Firefighter Fleur Lombard
800024	2 May 2024	HRH The Princess Royal
800025	29 April 2020	Captain Tom Moore
800026	6 August 2018	Don Cameron
800028	30 November 2023	Sir Peter Parker and Oliver Lovell
800029	17 February 2022	Christopher Dando and Evette Wakely
800030	5 July 2021	Lincoln Callaghan and Henry Cleary
800031	25 August 2021	Mazen Salmou and Charlotte Marsland
800032	28 February 2022	Iain Bugler and Sarah Williams-Martin
800033	4 March 2022	Emma Hurrell and Martin Heath
800034	13 July 2022	Jo Prosser and Tracy Devlin
800035	7 March 2022	Liz Gallagher and Naomi Betts
800036	30 October 2020	Dr Paul Stephenson
800306	9 November 2018	Harold Day DSC and Allan Leonard Lewis VC – Armistice Centenary Commemoration train
800310	7 May 2021	Wing Commander Ken Rees – escapee from (Stalag Luft III)
800314	6 March 2020	Odette Hallowes
800316	1 August 2022	#Lionesses
800317	28 September 2021	Freya Bevan
Special liveries
800016	25 November 2022	White Ribbon UK
800321	15 June 2020	'The Mask'

London North Eastern Railway unveiled a special vinyl on one of their units to celebrate the launch of Azuma to Scotland. It was operated on the first Azuma from Scotland, which ran on the 'Flying Scotsman' from Edinburgh on 1 August 2019. This same unit was also used when Azuma was launched to Aberdeen and Inverness respectively.

On 10 January 2018, unit 800010 was named Michael Bond in a ceremony at Paddington by his daughter, Karen Jankel. This coincided with the 60th anniversary of the late author's famous Paddington Bear series of children's books, and the other end of the unit carries the bear's name.

On 1 May 2021, unit 800025 Captain Sir Tom Moore, arrived back at London Paddington, after completing a challenge to stop at 100 stations in only 40 hours, raising money for charity in memory of Captain Tom. The train was greeted by applause.

LNER Class 800 units with special names or liveries

Unit number	Date	Name	Ref.
Named trains
800106	2023	You Belong
800111	21 October 2024	Thank You
Special liveries
800104	1 August 2019	Celebrating Scotland (Our Official LNER Tartan train)

Interiors

• 
  First class interior mock-up in 2014
• 
  Standard Class interior in unit 800002 before receiving GWR colours
• 
  The interior of first class aboard a GWR Class 800
• 
  GWR Standard class interior. This was the original seat cover which has since been changed on majority of the units.
• 
  The interior of first class aboard a LNER Class 800
• 
  The interior of standard class aboard a LNER Class 800

The passenger compartments on the Class 800 trains are typically divided into both first class and standard class sections. The vestibule area accommodates the exterior doors along with space for storage areas for passenger luggage (including bicycles, and a sizable universal accessibility toilet. It can be configured to include catering facilities, including a kitchen and preparation room. The interior was designed to fulfil the requirements of the Persons with Reduced Mobility-TSI standard, as well as to satisfy the varying requirements and preferences of multiple operators, and to facilitate future refurbishments and reconfigurations. The basic layout has been standardised.

The interiors have reportedly been praised for their increased leg-room and greater number of seats and tables in standard class, in comparison to the trains they replace. However, the seats in both standard and first class have been heavily criticised for excessive hardness and discomfort on lengthy journeys, with the overall first class experience said to be a downgrade as the seats are no longer leather like their predecessors due to fire regulations. The GWR IET has also been criticised for the lack of a buffet car with the catering service instead being provided by a trolley and also the fact that surfboards are no longer allowed on the train due to the limited space available. In comparison with the IET, the LNER Azuma has a small 'micro' buffet retained with other aspects of the interior being similar between the two companies.

Accidents and incidents

On the evening of 13 November 2019, an LNER Azuma (800109) was involved in a collision with a Class 43 HST powercar (43300) at Neville Hill Depot, Leeds when the Class 800 ran into the rear of the HST. The trains were travelling at 15 miles per hour (24 km/h) and 5 miles per hour (8 km/h) respectively, with three carriages of the Class 800 derailing and the leading vehicle of the Class 800 and trailing locomotive of the HST being severely damaged. On 18 November 2020, the Rail Accident Investigation Branch published its report into the accident with the investigation finding that driver error was the cause of the accident, with insufficient training of the driver being an underlying cause. The effect of the collision was exacerbated by the design of the Class 800 as crashworthiness requirements did not require the effects of a collision at less than 23.5 mph (37.8 km/h) to be taken into account, nor did it include specific criteria for assessing the derailment performance.

Cracks

A Class 800 bogie. The white part at the top is MIG welded to the body and has the triangular yaw damper bracket on the left and lifting pad at the top of the square fixture to the right.

On 26 April 2021 GWR temporarily withdrew eight 5-car Class 800 sets from service after finding cracks in the yaw damper brackets.

On 8 May 2021, Great Western Railway, London North Eastern Railway and Hull Trains suspended most of their Class 800 series trains after cracks were found on the welds of the lifting pads on an IET trainset undergoing maintenance. This incident is potentially linked to the issues identified on a GWR trainset undergoing maintenance on 26 April. Significant disruption was caused by cancellations of trains between London, to Scotland and to the west of the UK. Reports suggested that delays would last for "some time" with the repairs not being easy. From 13 May 2021, some trains started to return to service, however more severely affected trains require repairs before use and a long term fix for all units is required.

On 7 April 2022, the Office of Rail and Road (ORR), which regulates the safety and economics of Great Britain's railway, published a safety report on the fatigue cracks in the aluminium vehicle body shells above the bogies close to the yaw damper bracket and anti-roll bar fixing points. The trains had experienced greater loads from train movement than specified, probably caused by a combination of wheel wear and track design. Further cracks in or near the welds of the lifting plates to the vehicle body were the result of stress corrosion cracking (SCC) in a high-strength 7000 series aluminium alloy caused by a combination of residual stresses from being MIG welded to the body and exposure to air containing sea salt on railway lines near the coast. To mitigate the risk of cracking, 1,247 Class 800 series vehicles need to be repaired by replacing the affected parts including the longitudinal welds and by installing additional bolts, to retain the plate, if the weld should fail completely as a result of stress corrosion cracking.

Models

In 2017, Hornby issued its first OO gauge five-car model of the BR Class 800/0 Hitachi IEP Bi-Mode in GWR Green livery.

In early May 2021, Kato released its N-scale five-car model of the BR Class 800/0 Hitachi IEP Bi-Mode in GWR Green livery with the five-car model of the BR Class 800/2 in LNER livery later that month.