The Class 89 was a prototype design for an electric locomotive. Only one was built in 1986, by BREL's Crewe Works. It was used on test-trains on both the West Coast and East Coast Main Lines. It was fitted with advanced power control systems and developed over 6,000 bhp (4,500 kW). It was given the nickname Aardvark although railfans used to call it The Badger owing to its slanted front ends.