Hi Rik, I think you are right, I now remember reading that Captain Tom used to watch trials before the war, and a photo showed him as a boy standing near a gate in a wall as competitors passed by. The photos of Tom on the Scott do look to be post war. They could have been taken at the Ilkley Veterans Reunion trial which I think started in the fifties for older riders who still liked to compete using older machinery. I also seem to remember that Tom said he had been loaned a Scott for some events, although he had owned one previously.
David, I hadn't spotted that, I tried to enlarge that photo but the computer said No, at least without joining something that I didn't want to. I see the bike has the "Works" AK 222 number, and I wonder if it is at Dob Park, the ford entrance looks to be paved, and I think that the large rock in the middle is still there, I propped my 500T Norton against it to take a photo last year!