S/Ldr A. C. Leigh was the son of a regular soldier, and was called up at the outbreak of war.
After finishing his flying training he was posted to 7 OTU and then on to convert to Spitfires in August 1940. Shortly after this, he joined No 64 Squadron at Leconfield before being posted to join No 72 Squadron at Biggin Hill in October.

Leigh left the Royal Air Force in 1945 with a tally of two Bf 109s destroyed, probably another four destroyed and a shared destruction of a Do 17.