GBZ: Out of interest I've just had a quick look at the 10 Squadron F541 Op Record Book entries for November and December 1943, picked at random - and Beachy Head was used both outbound and (more often) inbound for Main Force attacks well into Germany on some nights in each month. The unit was based at Melbourne, near York, at that time, routing Beachy Head - Reading- Base on most occasions. (Of course, Flamborough Head was certainly used too for outbounds.)