Not strictly cancelled by the 1957 Defence White Paper, because no requirement or orders for it ever existed but the DWP effectively blocked any potential interest in it. Despite further limited funding by Hawker, the project folded in 1958.

Derived from Hawker’s failed submission for Specification F.115T, the P1103, which the Air Ministry had decided was too small, Hawker persevered with the general airframe design and developing it as a private venture, to become the P1121. Powered by a single de Havilland Gyron engine and armed with a pair of air-to-air missiles and two Aden cannons, it had an anticipated top speed of Mach 2.35 at altitude and Mach 1.35 at sea level. It’s highly plausible that given Hawker’s track record, P1121 could have fulfilled a multi-role fighter mission much the same as the RAF’s F4M Phantom eventually undertook more than ten years later. Credit: Christopher Budgen

Brooklands Museum took possession of what remains of the mock-up from the RAF museum Cosford in November 2023. It is currently still in off-site storage awaiting the creation of a plan for the protection, preservation and exhibiting of the airframe at the museum. Our Hunter XL623 Project team have offered to assist the museum with this process.