The Hawker Harrier was a British experimental biplane torpedo bomber aircraft built by Hawker Aircraft to a specification issued in the 1920s for the Royal Air Force.
The Fairey Aviation Company Fairey III was a family of British reconnaissance biplanes that enjoyed a very long production and service history in both landplane and seaplane variants. First flying on 14 September 1917, examples were still in use during the Second World War.
The Vickers Vildebeest and the similar Vickers Vincent were single-engined British biplanes designed and built by Vickers and used as light bombers, torpedo bombers and in army cooperation roles. First flown in 1928, they remained in service at the start of the Second World War, with the last Vildebeests flying against Japanese forces over Singapore and Java in 1942.
The Vickers Virginia was a biplane heavy bomber of the British Royal Air Force, developed from the Vickers Vimy.
The Hawker P.V.4 was a 1930s British biplane aircraft built by Hawker Aircraft in competition for a government order for a general-purpose military aircraft.
The Fairey Seal was a British carrier-borne spotter-reconnaissance aircraft, operated in the 1930s. The Seal was derived – like the Gordon – from the IIIF. To enable the Fairey Seal to be launched by catapult from warships, it could be fitted with floats.
The Fairey Gordon was a British light bomber and utility aircraft of the 1930s.
The Westland Wapiti was a British two-seat general-purpose military single-engined biplane of the 1920s. It was designed and built by Westland Aircraft Works to replace the Airco DH.9A in Royal Air Force service.
The Fairey Fawn was a British single-engine light bomber of the 1920s. It was designed as a replacement for the Airco DH.9A and served with the Royal Air Force between 1924 and 1929.
The Bristol Boarhound was a British army cooperation and liaison aircraft of the 1920s. It was a two-seat biplane with wings of equal span and a steel frame construction with fabric covering.
The Vickers Vixen was a British general-purpose biplane of the 1920s. Designed and developed by Vickers in a number of variants, with 18 Vixen Mark V sold to Chile. A prototype of a version with metal wings was built as the Vickers Vivid. The Vixen also formed the basis of the closely related Venture and Valparaiso aircraft, which were also built and sold in small numbers in the 1920s
The Vickers Type 94 Venture was a British army cooperation biplane of the 1920s, designed and built by Vickers, as a development of the Vixen. While six were built for the Royal Air Force, they were found unsuitable and were used for experimental work.
The Vickers Valparaiso was a British light bomber biplane of the 1920s. It was designed by Vickers as a development of its Vixen for export, being sold to Portugal and Chile.
The Parnall G.4/31 was a 1930s design from the George Parnall and Company to meet Air Ministry Specification G.4/31 for a "general purpose" aircraft.
The Gloster Goral was a single-engined two-seat biplane built to an Air Ministry contract for a general-purpose military aircraft in the late 1920s. It did not win the contest and only one was built.
The de Havilland DH.56 Hyena was a prototype British army cooperation aircraft of the 1920s. A single-engined biplane, the Hyena was designed against an RAF requirement, but was unsuccessful with only two being built, the Armstrong Whitworth Atlas being preferred.
The Vickers Type 253 was a single-engined two-seat biplane general-purpose military machine, built to a 1930 government specification. It won a production contract, but this was transferred to the same company's monoplane equivalent, the Wellesley. Only one Type 253 was built.
The Fairey G.4/31 was a British single-engined, two-seat biplane contender for an Air Ministry specification for a multi-role or general purpose aircraft. Unsuccessful, only one was built.
The Hawker F.20/27 was a British fighter design built to an Air Ministry specification for an interceptor in the late 1920s. It was a single-seat biplane powered by a radial engine; the very similar but V-12-engined Hawker Fury development proved superior and only one F.20/27 was built.
The Fairey Ferret was a 1930s British general-purpose biplane designed and built by the Fairey Aviation Company. It performed well in trials but was not ordered into production.
