British Rail Class 332

The British Rail Class 332 (originally Class 331) was a electric multiple unit passenger trains used on the Heathrow Express. These trains went from London Paddington station to Heathrow Airport. There were 14 trains which had four or five carriages each. They were built in 1998 by CAF with traction equipment supplied by Siemens Transportation Systems at a factory in Zaragoza, Spain.