British Rail Class 122
Class 122, No. 55006, at Bewdley on the Severn Valley Railway on 15 October 2004, whilst taking part in the Railcar 50 event. This unit is painted in original BR Green livery, and is preserved on the Ecclesbourne Valley Railway.
In service	1958- 1995
Manufacturer	Gloucester RC&W
Family name	Bubble Car
Number built	21
Formation	1 car per trainset
Operator(s)	British Rail
Specifications
Car length	64 ft 6 in
Width	9 ft 3 in
Height	12 ft 8 1/8 in
Maximum speed	70 mph (112 km/h)
Weight	36 tons 10 cwt

The British Rail Class 122 diesel multiple units were built by Gloucester RC&W in 1958. Twenty single-car driving motor vehicles, called "Bubble Cars", were built, numbered 55000-55019. These were supplemented by ten trailer vehicles, numbered 56290-299 (later renumbered 54290-299).

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