John Sargeant's Unit Concert Party appearance

My uncle, John Sargeant, was in the RAF during the war and was in the Unit Concert Party as appearing as Jackie Sargeant. He worked at the Dart Board factory as a silk screener and I am told he used to sing in the Laindon Hotel. In 1939 he lived at 3 Denbigh Terrace, with his father John, mother Florence, sister Rose and my father Henry. Rose is now living in Billericay and in good health.