Start of a new breed of monoplane bombers for the RAF and first flown in June 1935 with service delivery in April 1937. Radical geodetic (metal basketwork) was used for it's construction and was distinguished by great span, high aspect ratio, extreme cruise efficient wings.
Above example was one of the very first Wellesleys to reach the RAF and served with 76 Sqn at Finningley, Yorkshire in April 1937.
Wellesleys were extremely active in East Africa and the Middle East until late 1942.
Source: Fighting Aircraft of World War II
Salamander Books Ltd.