The FAA units originally came from FAA squadrons left ashore when the carriers Illustrious & Formidable were damaged in early 1941.Also the many RAF bombers used in the anti-shipping role in the theatre, Beauforts, Beaufighters etc.
Would the Swordfish have been removed from torpedo role by the time of the first Battle of El Alamein, or did that just apply to carrier based aircraft?
815 - operated around various bases in the Eastern Med (Crete, Cyprus, Palestine, Egypt & Libya) until July 1943. It had Swordfish throughout but added Albacores in Oct 1941.
826 - Egypt, Libya & Palestine during 1942, with det at Malta 11-12/42. Albacores throughout.
828 - Flown into Malta in Oct 1941 from Ark Royal. Equipped with Albacores throughout but absorbed a few Swordfish during its very early days on the island.
830 - From July 1940 to Dec 1942 (on paper it existed until March 1943) based at Hal Far, Malta with Swordfish. By March 1942 it had only 3 aircraft with its final two replacements arriving in May.
So although a lot of the credit goes to the Swordfish by 1942 it was playing second fiddle to the Albacore in number terms.
828 & 830 operated together from Malta throughout 1942 because the Swordfish got radar much earlier than the Albacores, so it is difficult to split sinkings between the two types. Total was something like 30 ships sunk & 50 damaged between 1940 & 1943.