"Aircraft of the Royal Air Force 1939-1945- Handley Page Hp.54 Harrow and “sparrow”." Harrow Transport ambulance aircraft, K6984 ‘BJ-E’, of No. 271 Squadron RAF Detachment parked at Hendon, Middlesex. The type was also known unofficially as the “Sparrow”. To the right is a de Havilland Flamingo, and in the background a Douglas Dakota, both of No. 24 Squadron RAF.