I’m a bit confused.

No. 161 (Special) Squadron were operating from RAF Tempsford, Bedfordshire from April ’42 to June ’45. http://en.wikipedia.org/wiki/No._161_Squadron_RAF

More on 161 and 138 at RAF Tempsford here:
http://www.tempsford.20m.com/aircraft.html

There was at least one detachment from Tempsford, in August 1944, for ops into Western France – (or maybe the usual destinations, but avoiding the hazards of the Normandy bridgehead ?)

Here is an extract from the RAF Winkleigh ORB at Kew:

” 27th July 1944. 161 Sqn Lysander Flight, advance party, arrived for Ops during the August moon period, led by S/Ldr LF Ratcliff DSO DSC AFC.

4th Aug. 44 Seven Lysanders took off on Ops. F/O Alcock failed to return.

11th Aug. 44 161 Sqn det returned to Tempsford. “

There is also mention of Winkleigh in Hugh Verity’s book.

HTH

DD