BR type 5 heavy freight locomotives with a Ruston-Paxman engine. 135 locos were built between 1976 and 1984: 56001 to 56030 by Electroputere of Romania 56031 to 56115 at Doncaster Works 56116 to 56135 at Crewe Works
Some locos were latterly renumbered into the 56/3 series. The last regular usage by EWS was in 2004 with some locos exported to France for TGV extension construction.
A number are in service with smaller freight operators with others preserved.