This is a Lockmasters floor safe. Its an old safe that used to be made in Alton, Hampshire. The owner had inherited the safe many years ago with a small bag which contained a change key and allen key. The customer had always just used the key lock but the dial had been moved and the safe had locked. The combination, unknown. I attended and opened the safe, reset the combination to a number that the customer was happy with and re-secured all bolts (the two hinge bolts were loose, binding the door so it would not open)
Dave over at E3 locks sent me over a photo of the internals as I had nothing in my files and he had recently opened another Lockmasters safe. Cheers Dave!