French and British requirements converged in the mid-1960s: Dassault Aviation's heritage account describes France seeking replacements for training and tactical-support aircraft while the Royal Air Force wanted a two-seat supersonic Hunter replacement. A May 1965 cooperative construction agreement led Breguet to work with British Aircraft Corporation, and the SEPECAT consortium later directed the French-side technical contractorship after Breguet was absorbed into Dassault.
SEPECAT's public industrial footprint is therefore narrower than a diversified defense company. Its importance is that the Jaguar became one of the best-known British-French combat-aircraft programs of the Cold War, assembled on parallel national lines and built in several single-seat, two-seat, naval-prototype, export, and license-production branches. Dassault records 573 aircraft under one count, while its corporate timeline gives a broader 605-unit figure; both sources connect the output to French, RAF, export, and Indian aircraft.
Anglo-French combat aircraft cooperationLow-level strike aircraftTactical support aircraftAdvanced jet trainersReconnaissance and nuclear-delivery aircraft variants
SEPECAT was a program-specific Anglo-French joint venture rather than an active manufacturer with a standalone public site. Current public sourcing comes mainly from Dassault and BAE Systems heritage material, RAF Museum collection records, and rights-clear image metadata.