page_title: British Rail Class 421
hierarchical_section_title: British Rail Class 421
caption_attribution_description: English: British Rail Class 421/5, no. 1313 at London Waterloo station. This was one of 22 "Greyhound" units operated by South West Trains. Following the replacement of the Class 421 fleet on South West Trains express services with the Class 444 Desiro units, this unit was withdrawn and scrapped.
context_page_description: The British Rail Class 421 electrical multiple units were built at BR's Holgate Road carriage works between 1964 and 1972. Units were built in two batches, and were initially introduced on services on the Brighton Main Line. Later units were introduced on services to Portsmouth. These units replaced older Southern Railway-designed units, such as the 5Bel "Brighton Belle" units, and 4Cor units. Towards the end of their life, with the increasing use of newer trains which were equipped with sliding or plug doors, these trains were known commonly as "slam-door trains". The fleet's lifespan was 46 years.
context_section_description: The British Rail Class 421 (or 4Cig) electrical multiple units were built at BR's Holgate Road carriage works between 1964 and 1972. Units were built in two batches, and were initially introduced on services on the Brighton Main Line. Later units were introduced on services to Portsmouth. These units replaced older Southern Railway-designed units, such as the 5Bel "Brighton Belle" units, and 4Cor units. Towards the end of their life, with the increasing use of newer trains which were equipped with sliding or plug doors, these trains were known commonly as "slam-door trains". The fleet's lifespan was 46 years.
caption: Class 421/5, no. 1313, at London Waterloo on 19 July 2003. This is one of 22 "Greyhound" units that were operated by South West Trains. This unit has since been withdrawn and scrapped.
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