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 Hawker P.1072 was a 1949 experimental British aircraft acting as a test bed for the Armstrong Siddeley Snarler rocket booster engine. It was the prototype Hawker Sea Hawk modified to install the rocket in the tail.
The Hawker Cygnet was a British ultralight sesquiplane aircraft of the 1920s.
The Hawker Woodcock was a British single-seat fighter built by the Hawker Engineering Company as the first fighter to be produced by Hawker Engineering. It was used by the Royal Air Force (RAF) as a night fighter in the 1920s.
The Hawker Hornbill was the last Hawker military aircraft designed under the direction of George Carter. The design was started in 1925 and the first flight took place in July 1925. The Hornbill did not achieve service in the Royal Air Force due to problems in its power plant and radiator. Only one aircraft was built.
The Hawker Hedgehog was a three-seat reconnaissance biplane, to be used for naval scouting, produced to meet Air Ministry Specification 37/22.
The Hawker Heron was the first fighter aircraft designed at Hawker Aircraft with a basically metal structure. Sydney Camm was the chief designer that introduced what became the typical structure for all Hawker aircraft until the introduction of the jet-powered Hawker P.1040. This structure consisted of metal tubes with their ends swaged so that they could be connected to each other by means of "fishplates" and bolts.
The Hawker Danecock biplane was developed from the Hawker Woodcock for the Danish air force and naval service.
The Hawker Hawfinch was a British single-engined biplane fighter of the 1920s. It was unsuccessful, with the Bristol Bulldog being selected instead.
The Hawker P.V.3 was a British single-engined biplane fighter prototype of the 1930s. Only a single example was built, the Gloster Gladiator being selected instead to fulfill the requirement to which it was designed.
The Gloster SS.35 Gnatsnapper was a British naval biplane fighter design of the late 1920s. Two prototypes were built but the type did not enter production.
The Bristol Bloodhound was a British two-seat reconnaissance/fighter aircraft designed and built by the Bristol Aeroplane Company as a possible replacement for the Bristol F.2 Fighter for the Royal Air Force. It was unsuccessful, only four prototypes being built.
The Caproni Ca.101 was a three-engine Italian airliner which later saw military use as a transport and bomber. It was designed in 1927 and first flown in 1928.
The Nieuport Nighthawk was a British fighter aircraft developed by the Nieuport & General Aircraft company for the Royal Air Force towards the end of the First World War. Although ordered into production before the aircraft first flew, it did not enter large scale service with the RAF owing to unreliable engines. Re-engined aircraft did see service in Greece, serving from 1923 to 1938.
The Short S.11 Valetta was a 1930s British passenger monoplane designed and built by Short Brothers at Rochester.
The Westland Interceptor was a fighter developed by the British company Westland Aircraft to Air Ministry Specification F.20/27. When tested in 1929 and 1930, it showed unsatisfactory handling characteristics and was rejected by the RAF in favour of the Hawker Fury biplane fighter.
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 Hawker Hoopoe was a British prototype naval fighter aircraft designed and built in 1927 by Hawker Aircraft.
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.
