I only meant that the british starting submarine forces in the Mediterranean scenario were small. Certainly, afterwards the british Royal Navy deployed a significant submarine force in the Mediterranean that really succeed in sinking lots of italian convoys and some warships and in supporting Torch, Sicily and Italy landings. But british losses in submarines were also high.
In the mediterranean scenario were deployed 3 Royal Navy submarine flotillas during the war: the 1st in Malta, the 8th in Gibraltar and the 10th in Malta.
So keeping in mind this later in the war important british submarine force in the mediterranean scenario no need at all to remove the current initial CEAW british submarine in Malta but as joerock says it is justified a second initial italian submarine unit.