Three different series of convoys bore this prefix. The first was three convoys from Curacao to Halifax from July 1942 - September 1942. The next began with five convoys from Malta in October 1943 and then later from Augusta to primarily Bari, but also some convoys to Ancona and Taranto, ending with AH 90 on 19 January1945. The final series began on 15 January 1945 from Bari to Ancona, ending on 1 May 1945 with AH 34.
No convoys were cancelled.