Was this in late 59, early 60? I was up the road at Swinderby at the time, and I remember we had a couple of RN courses who for some reason hadn't gone to Linton on Ouse for Vampire training, as they usually did.
Great story, didn't hear of any of that sort of thing being tried while I was there. Mind you, it was difficult enough for two average sized blokes to squeeze into a T11 by day, so the thought of trying to infiltrate someone not entirely au fait with strapping into a bang seat, at night, and in a hurry, no matter how small she was, is difficult to imagine. But I did know a chap who told me he had taken his wife for a tour of the low flying routes in Scotland in a Canberra, when he was on the staff of the OCU!
Thoroughly enjoyed your other thread, blind landings at LHR; 200ft and 600metres off a manual ILS quite exciting enough for me in my Falcon 20 and HS125 days! Luckily it didn't happen very often.