Have been to a property in Thatcham, where the only lock on the front door was a 2 lever mortice sash lock. As there are only approx. 40 key differs from this make of lock and it does not conform to British Standard it is unlikely that any insurance policy would cover any break in to the property. We have therefore removed this lock and fitted a new lock that conforms to British Standard BS3621:2007. The job involves enlarging the mortice to accommodate the slightly larger lock body and fitting of a new striking plate as the bolt on the new lock has a longer throw and the striking plate is fully boxed in and not just a thin metal plate. Was also able to provide 3 additional keys by duplicating them on site at the same time with our on board key cutting facilities.