A-side and B-side
Given that the band owed one final single to United Artists to conclude their recording contract, during a mid-tour break they entered Olympic Studios on 5 and 6 January where they recorded Brock's "Kings of Speed" (which featured lyrics written by Moorcock originally intended for inclusion on his "New Worlds Fair" album), Lemmy's "Motorhead" and House's "Spiral Galaxy". The first two were selected as the A-side and B-side respectively, and the single was released on 7 March.