uk map

I suggest you check the Ira Dye volume first, if available, and obtain the prisoner number then use that to consult the original which has additional information.
Plymouth - Dye missing entries start at page 104. Death certificates
Portsmouth -Dye
Stapleton -Dye
Dartmoor -Dye Death certificates Riot (massacre) report
Dartmoor - alphabetical list original
Dartmoor 1-1009 original
Dartmoor 1090-2394 original
Chatham - Dye missing entries start at page 149. Death certificates
Naussau prison ship -original

Quebec - original

Gibraltar -original

Malta -original