The Class 466 EMUs were built between 1993 and 1994 by Metro-Cammell in Washwood Heath, for the Network SouthEast sector of BR.
As part of the privatisation of BR, all were sold to Angel Trains. They were operated by Network SouthEast until 1996, then by Connex South Eastern until 2003, South Eastern Trains until 2006 and Southeastern to the present day.
One unit so far has been preserved.