There is a tunnel from the old Police station to the Shire Hall (Crown Court) which was used until the Police station closed to take offenders from the Station Cells for their court appearance.
The goal has been redeveloped, even hubby isn't where it was actually too, he thinks it was behind the police station, but there isn't a carpark there. But if the land where prisoners had been buried to have been redeveloped, then the graves would have had to been moved, so i would try Somerset Record office, as they might have records concerning removing the graves to another location. Council when removing graves elsewhere have to record the information.
Thank you, that’s interesting. I’ll contact them and see what they say. Much appreciated!