Have you tried the Beagle Pup & Bulldog Club - they may well be able to help.
See
Beagle Pup & Bulldog Club .
XX549 - that was based at Topcliffe during my time; many of us sweated buckets at Topcliffe during our session with Bulldog Standards Squadron...
The Bulldog is a nice little aeroplane and was an excellent military trainer back in the days when the RAF could afford its own aeroplanes......