While at Naval Station Argentia in November, the squadron was supplied with the new American acoustic torpedo, codenamed the Mark 24 mine, but commonly known as "FIDO".

[8] While Biter was under repair 811 Squadron were stationed at RNAS Inskip (HMS Nightjar), finally returning to the ship on 12 January 1944.

On 16 February, in the Bay of Biscay, 811's Martlets shot down a Ju 290 long-range reconnaissance aircraft, which had attempted to attack the convoy escorts with a glide bomb.

Biter arrived at Gibraltar on 25 February where two Swordfish of 811 Squadron spent a week operating out of RAF North Front.

An early prototype, flown by test pilot Eric Brown, was the first twin-engined aircraft to make a carrier landing, when it touched down aboard Indefatigable on 25 March 1944.

Stationed at RNAS Brawdy, Pembrokeshire,[9] 811 Squadron was the only unit to operate this type, which never served aboard a carrier, before it was superseded by the Sea Hornet.

[10] 811 Squadron was reformed in the 1950s, with the Hawker Sea Fury, and embarked aboard HMS Warrior dispatched to the Far East for the Korean War.

Subsequently, the Squadron reformed flying the Hawker Sea Hawk jet from Bulwark in mid–1955[11] and operating from Centaur in the Far East and the Mediterranean at the Suez war in 1956,[12] before being finally disbanded the same year.