i have been jumped in early war times by aircraft in the area of the Shetlands, the Orkney islands and northward from the outer Hebirdes.
this is a logical place for aircraft to focus upon because u-boat traffic bottle necks here in their transition between the north sea and the open atlantic.
you wont see much air activity in 1939, 1940 and 1941. but air activity is out there and it increases each year a little bit.
1942 you see a spike in air activity, and then 1943 44 amd 45 you will likley encounter a group of aircraft multiple times a day every day you are on patrol
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