These walk-around photos were taken at the RAF Museum London in Hendon in 2019. They show a Hawker Hart II, displayed as J9941 of No. 57 Squadron RAF. The Hart was one of the most influential British aircraft designs of the interwar period — a single-bay biplane day bomber powered by the Rolls-Royce Kestrel engine that, when it entered service in 1930, was faster than any RAF fighter then in service. This embarrassing situation forced an urgent modernisation of Fighter Command thinking, and the Hart's exceptional design directly inspired a whole family of Hawker variants including the Audax, Demon, Hardy, Hind and Hector, as well as the famous Hurricane. The aircraft on display is not an original RAF service machine but Hawker's own company demonstrator, built in 1930 and registered G-ABMR. It served as a factory demonstration aircraft for over a decade, being flown in fifteen European countries and used to trial various engines and equipment. It was repainted in the markings of J9941 of No. 57 Squadron in 1963 and continued flying at air shows and displays until it was permanently grounded in 1971 — making it the last Hart to fly in Britain. It was presented to the RAF Museum by Hawker Siddeley and has been on display at Hendon ever since.