The Hawker Harrier was an experimental biplane torpedo bomber aircraft built by Hawker Aircraft to a specification issued in the 1920s for the RAF.
The Hawker Nimrod is a British carrier-based single-engine, single-seat biplane fighter aircraft built in the early 1930s by Hawker Aircraft.
The Fairey Flycatcher was a British single-seat biplane carrier-borne fighter aircraft made by Fairey Aviation Company which served from 1923 to 1934. It was produced with a conventional undercarriage for carrier use, although this could be exchanged for floats for catapult use aboard capital ships.
The Hawker Duiker was an unusual and unsuccessful aircraft. It was the first design at Hawker under a new chief designer, Captain Thomson, in 1922. Much of the equipment and parts were proprietary and made by another aircraft company, Vickers, which shared the airfield at Brooklands with Hawker. The Duiker was a parasol wing monoplane in a period where the biplane held sway.
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 RAF as a night fighter in the 1920s.
The Hawker Horsley was a British single-engined biplane bomber of the 1920s. It was the last all-wooden aircraft built by Hawker Aircraft, and served as a medium day bomber and torpedo bomber with Britain's Royal Air Force between 1926 and 1935, as well as the navies of Greece and Denmark.
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 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 Dantorp H.B. III was a Danish single-engined biplane bomber of the 1930s. The aircraft was a development of the British Hawker Horsley designed for the Danish Navy, but differed in being powered by a radial engine and having a third crew member. Two examples were built in Britain as a precursor to license production in Denmark. Financial constraints meant this was not realised and the Hawker-built examples were the only aircraft produced. They served until the German invasion of Denmark in 1940.
The Armstrong Whitworth A.W.16 was a British single-engine biplane fighter aircraft designed and built by Armstrong Whitworth Aircraft. A number were sold to the Chinese Kwangsi Air Force.
The Armstrong Whitworth A.W.14 Starling was a prototype British single-seat biplane fighter developed for the Royal Air Force in the late 1920s which unsuccessfully competed against the Bristol Bulldog.
The Avro 627 Mailplane was a British biplane developed in 1931 by Avro from the Avro Antelope bomber as a mail plane for use in Canada. Only one was built which ended up being used as a test bed.
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 Parnall Plover was a British single-seat naval fighter aircraft of the 1920s. Designed and built by George Parnall & Co. for use on Royal Navy aircraft carriers, it was ordered into small-scale production but after extensive evaluation, the Fairey Flycatcher was preferred for large-scale service.
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 Westland Weasel was a prototype British two-seat fighter/reconnaissance aircraft of the First World War. Designed to replace the Bristol Fighter, the Weasel was a single engined tractor biplane. Four prototypes were built, but no production followed owing to the failure of its original engine, although the prototypes were used as engine test beds for the successful Armstrong Siddeley Jaguar and Bristol Jupiter engines.
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 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.
