British Rail Class 450

The British Rail Class 450 Desiro (4-DES) is a type of third-railDCelectric multiple unit (EMU) passenger train that entered service during 2003. Used for outer-suburban services, the units were built with both first- and standard-class accommodation. They have a maximum speed of 100 mph (160 km/h).

The Desiro UK family also includes units of Classes 185, 350, 360, 380 and 444.

Along with the Class 444 Desiro, the Class 450 units are operated by South Western Railway.