My insurance company AXA says they won't cover my loses because I did not have a 5 lever mortice dead lock approved to BS3621 installed on the door. I had a 3 lever sash lock and a £100 commercial key pad lock. After looking through the small print in the policy I did see where there is an endorsement (special terms and conditions) that says I must have a certain type of lock. "5 lever mortice dead lock approved to BS3621" However, I don't remember being asked about this. Even so I wouldn't know a 5 lever mortice deadlock from a Yale lock or any other type of door lock. Since my door has never had this type of lock, I essentially have never been covered. I've been paying my premiums for nothing. Can anyone please help advise me on this. many thanks