British Rail Class 458

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British Rail Class 458 Juniper
8030 at London Waterloo.JPG
458030 at London Waterloo on 19 July 2003. This unit is painted in South West Trains mainline livery.
Manufacturer Alstom
Built at Washwood Heath
Family name Juniper
Constructed 1998–2000
Entered service 1999–
Number built 30 trainsets
Formation 4 cars per trainset
Fleet numbers 458001–458030
Operator South West Trains
Specifications
Maximum speed 100 mph (160 km/h)
Weight 164.3t
Power supply Third rail
Voltage 750V DC
Braking system(s) Air, regenerative


The South West Trains Class 458 (or 4JOP) electrical multiple units were built by Alstom at Washwood Heath between 1998 and 2000. These units are part of Alstom's Juniper family of units, which also includes Classes 334 and 460.