I was on the joint committee that oversaw Beamish Museum when the decision was taken to set up Davy's Fried Fish, the fish and chip shop in the pit village. It was a superb investment as it paid for itself in a very short space of time. My warning is, if you want to get fish and chips there, expect a queue. Nevertheless, the wait is worth it. We had lunch there on Sunday when visiting the museum.
The deep fat fryer is coal fired. The equipment is the real thing, used 100 years ago, not a replica.