The house side door has an ERA rim lock which I'd like to replace with something that meets BS3621 and, ideally, takes a Euro cylinder so I can have a common key with the other Euro cylinders. Much searching hasn't found anything. The only options seem to be a sashlock or a simple mortice lock, but the door is a traditional oak door, made of vertical boards about an inch thick, so I would need to mount a block to fit the lock into. Doing that isn't a problem, but I'd prefer to find an auto dead-locking rim lock that will take a euro cylinder. Any suggestions?