Note: This is a sub-section of Short Brothers
The Short SB.5 (serial WG768) was a British research aircraft with "highly unorthodox, adjustable wing" designed by Short Brothers in response to the UK Air Ministry requirement ER.100, to provide input for the design of the English Electric P.1 (prototype of the English Electric Lightning) by testing the low speed flight characteristics of various configurations of wing-sweep required for supersonic flight.
In addition, the tailplane could be mounted either on top of the fin ("T-tail") or below the fuselage. The tests ultimately confirmed that the original P.1/Lightning design was an effective configuration for high speed flight.