19 sqd. [ Spitfire 2a] was at Fowlmere moved to Matlask 16 8 41
65 sqd. [ " ] at Kirton in Lindsey moved to Oulton 28 9 41
226 sqd. [ Blenheim] at Wattisham
Presumably the two Spit. squadrons operated from a forward airfield for the op.
I probably have more info. in books but will need to track it down.