On 3 Aug, 19:15, NT wrote:

If the lock's a good one it'd be cheaper to cut the hinges, with the
door out the lock can be removed and new keys cut for it.

What's top price on a mortice lock, even the best?

Now a good auto-deadlocking rimlock is 50 quid plus, but I can't think
of any reason to spend more than 20 on a 5 lever mortice