Dear sir
It is still possible to fly over the Driffield site. You could try a "trial lesson" from Beverly Aerodrome(4 miles ne of Beverly town.)
Try and get to Wombleton which about 20 miles nw of Driffield, again Canadian AF.
I have always wondered if there was a field in Doncaster and am familiar with the museum. I instructed around here for a year and often look for evidence found but nothing apart from the museum and it's hangar.
Regards