[1] Moule played piano with the Johnny Dankworth Quartet, leaving to join Oscar Rabin in October 1945.
He played with Remo Cavalotti (1946) for a summer season and Joe Daniels (1947) before working on the Queen Mary in Bobby Kevin's Band, with Ronnie Scott and Johnny Dankworth.
Moule worked with several bands including; Jiver Hutchinson, Bert Ambrose, Frank Weir and Ken Mackintosh (1948–50).
[3] In 1956–1959 he arranged for Ted Heath's orchestra, and during this time composed the suite Jazz at Toad Hall, based on Kenneth Grahame's 1908 children's book The Wind in the Willows, which was released on Decca Records in 1958.
As well as working as the music arranger, Ken Moule appeared as Paul, the restaurant pianist, in several episodes during series 3 of the BBC's Secret Army.