 Sonic Assassins was formed by Brock to exist alongside Hawkwind, but to focus on playing local concerts around the South West of England.When Hawkwind split up after the 1978 tour of the United States, Bainbridge was asked to play for Brock and Calvert's new band Hawklords.By 1979, the Hawklords had largely disintegrated and although the legal ownership of the name "Hawkwind" was still in doubt, Brock and Bainbridge re-created Hawkwind.