British Rail Class 123

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British Rail Class 123
In service1963 - 1984
ManufacturerBR Swindon Works
Number built40 units
Operator(s)British Rail
Car length64 ft 11 1/4 in
Width9 ft 3 in
Height12 ft 9 1/2 in
Maximum speed70 mph (112 km/h)
Weight41 tons 14 cwt

The Class 123 was a type of Diesel Multiple Unit built for British Rail in 1963. They were built by British Rail at Swindon Works, and designed like all Swindon units as inter-city sets. Ten of the four-car sets were built and introduced in 1963. The units bear a visible similarity to the British Rail Class 309, however there is no 'relation' here as the two types were built by different manufacturers for different markets.