Formed at Hamble by John Siddeley in 1931, Air Service Training (AST) was the main civil operator of the Avro Cadet. G-ADCX was the last Type 631 plane, delivered in February 1935. Also seen are Type 631s G-ABWS / 1, G-ABXU / 2 and G-ADAV / 15; and Type 643 Cadet IIs G-ADTG / 18, G-ADTH / 19 and G-AEIR.