May I just add that the Hampdens of 5 Group had the task of shipping attack throughout the early war years and were being held for attacks on the German Fleet. Attacks on invasion barges was part of their primary role! They subsequently prioritised on mine laying and attacks on the German Capital ships in ports such as Brest. (It was not their fault that most bombs bounced off the armoured decks of the Scharnhorst, Gneisenau and Prinz Eugen when they were lucky enough to score hits).