It is certainly news to me that there was a replica Hurricane in the BoB film fitted with a significant engine.
There was however at least one replica Spitfire fitted with a small engine. It was fitted with a fully moulded GRP Hurricane three blade propeller, unlike the flat propellers fitted to the bulk of the replica Spitfires.
Its purpose was to spin the propeller and I would speculate that it met its demise when towed by hidden cable into a bomb crater/tanker etc.
PeterA