Dougie,
Unknown. Unfortunately the picture caption doesn't say anything about the boat, just focusing on the MG 34. The position of the mount siting, aft of the last lifebelt hole, the gyrocompass forward to the periscope housing and the striped wooden panel make me think of a type VII (only the handrail is a bit odd), but the boat id number is a real mystery. Unfortunately there's not even a cap badge that can help us to identify the boat.
Cheers,
SG