The 1960s and 1970s are regarded by some historians as being particularly creative decades for jazz in Britain, when British jazz developed its own sound that was distinct from that of American jazz. While not denying that this was a creatively fruitful period in British jazz, in this paper I argue that a ‘British sound' in jazz is difficult, perhaps impossible, to define, even though some authors have referred to a sense of ‘Britishness', particularly in the work of certain musicians discussed by Ian Carr in his book Music Outside: Contemporary Jazz in Britain. Some British jazz, performed largely by white (and mostly male) musicians at this time, was influenced during the 1960s by the contribution of immigrant black musicians from South A...