Gordon I blame you for making my "to do list” even longer today
The flying fuse holder appears to be a panel mount holder. It occurred to me that it would make a super immobiliser device if it was mounted on a bracket on the back of the heel board with the fuse just poking through, and maybe a simple cover. An easy alternative to a power cut of switch that I had been pondering on.
Just lift the carpet and whip out the fuse to kill the power