Alongside the four-engined HP.42 (Hannibal class), HP designed a smaller, three-engine airliner that Imperial Airways didn't order, but was reworked as the HP.43 bomber-transport. The sole prototype first flew on 21 June 1932, but was found to be lacking in performance and heavy on the controls. J9833 was extensively rebuilt as a twin-engined monoplane, the HP.51, which led to the HP.54 Harrow. The original caption suggests that this nice photo was taken during the Friday rehearsal for the 1933 RAF Display, but the public don't fit the description of schoolchildren.

Only one example was built of the Clipper two-seat touring monoplane, first flown in December 1932. After participating in the 1933 King's Cup Race it became a hack aircraft at Saunders-Roe, which took over Spartan. It was destroyed in air raid on Cowes in 1942. It is seen here at Hendon at the 1933 RAF Display, as proven by the Vickers 210 Vespa VII, K3588, wearing show number 9. That aircraft, although built in 1925, had set a world altitude record of 43,976 ft in September 1932, powered by a supercharged Bristol Pegasus engine.