British Rail Class 123

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.

British Rail Class 123
In service	1963 - 1984
Manufacturer	BR Swindon Works
Number built	40 units
Formation	unknown
Operator	British Rail
Specifications
Car length	64 ft 11 1/4 in
Width	9 ft 3 in
Height	12 ft 9 1/2 in
Maximum speed	70 mph (112 km/h)
Weight	41 tons 14 cwt