The squadron re-equipped with the Supermarine Spitfire in April 1941 and the squadron moved to Northern Ireland in October 1942. In April 1943 the squadron returned to Tangmere for bomber escort work – some pilots being issued with the Spitfire Mk IXc. Between November 1943 and October 1944 the squadron formed part of Air Defence of Great Britain (ADGB). For Operation Overlord (the Allied invasion of Normandy) it flew the Spitfire V LF operating from RAF Friston in ADGB, though under the operational control of RAF Second Tactical Air Force.