Many thanks to the forum indeed.

F/O Tait's combat record does indeed record a Bf109 crashing on land. The A/C came down approx 5 miles west of Portland and is listed as crashing into Chesil Bank.

P/O Leary's combat record claims a Bf109, but sadly there is no record of where this A/C came down.

Is there any way of getting an accurate summary of the losses of Bf 109's from the Luftwaffe during that action? It would be very useful to know precisely how many possible aircraft there are to find...