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Hornby R40039B

BR, Mk3 Sleeper Coach, 10685 - Era 8

Manufacturer catalogue image - please note that pre-release images may be CAD renders or CGI images rather than photographs

Prototype Era
Era 8 (1983 to 1994) British Rail Sectorisation

Manufacturer description

In-order to allow running at 125 mph on Britain's Victorian era railways, new rolling stock was needed by British Railways. Significant improvements over the Mk2 included new secondary air suspension between the bogies and the coach body as well as aerodynamic skirting on the underframe.

Mk3 coaches are 75ft (23m) long enabling far greater capacity than older coaches. Mk3 coaches also incorporate disk breaks and wheel slip protection enabling faster deceleration. The first Mk3 coaches to be delivered were used as part of the HST prototype along with the two Class 41 diesel power cars in 1972. Mk3 coaches entered service in 1975 along with the Class 43 forming the iconic InterCity 125 trainset. After the HST Mk3 coach variant was introduced, further Mk3 coaches were introduced to the West Coast Mainline (WCML) for use as part of locomotive hauled trains. Whilst Mk3 stock is standard for HST units, the standard locomotive hauled stock is Mk3a.

Mk3a stock differs from Mk3 stock due to the inclusion of buffers as well as a different electrical system that uses motor generator units in each coach to power air conditioning and other ancillaries Mk3a stock was built until 1984, before 3B stock with improved seating and lighting was built from 1985 to 1988. In 1979 British Rail ordered 236 Mk3a sleeper carriages to replace an ageing fleet of Mark 1 sleeper cars built to various designs and which dated from the late 1950s to early 1960s. This order was later reduced to 207 carriages.

East coast sleeper services between London and Scotland ceased in May 1988, but the sleeper services on the WCML from Euston remined. Mk3 sleeper vehicles remain in use on the Great Western Railway's Night Riviera from London Paddington to Penzance in Cornwall having had their interiors refurbished.

Catalogue listing

Model details

Prototype information

^* Class names often change over the lifespan of a locomotive, so this is not necessarily the class name used by the operator in the period modelled.

Hornby Railway's BR Mk3 Sleeper Coach 10685 is a OO gauge model representing a British Rail Mark 3 sleeper carriage from the British Rail sectorisation period. The model is finished in pristine condition, carries the executive livery, and bears the running number 10685. It is built to the manufacturer part number R40039B and is designed to run on BT10 bogies with a 5‑pole skew wound motor.

The coach measures 303 mm long, is coloured grey and can negotiate a minimum curve of 2nd radius (438 mm). It features a wheel arrangement of BT10 bogies and uses a 5‑pole skew wound motor. The model represents a Mk3 sleeper (classification SLE – Sleeper Either Class) built by BREL Derby between 1975 and 1988. It is supplied as a ready‑to‑run unit with a pristine finish.

The real Mk3 coaches were introduced to allow speeds of up to 125 mph on Britain's Victorian era railways, offering improvements such as secondary air suspension, aerodynamic skirting, disc brakes and wheel slip protection. The first Mk3 coaches entered service in 1975 as part of the InterCity 125 (HST) trainset and were later used on locomotive‑hauled services on the West Coast Mainline. Mk3a variants added buffers and a motor‑generator electrical system, while Mk3b stock (built from 1985 to 1988) provided upgraded seating and lighting. A number of Mk3 sleeper carriages remain in use on the Great Western Railway Night Riviera service between London Paddington and Penzance.