ABSTRACT
Fire regulations require door locks to be openable from inside without a key: this conflicts with security as it facilitates an intruder’s escape. In cases when there are more than a few people inside the building, or where the occupiers are unfamiliar with it, the fire escape requirements are paramount. This does not generally apply to most small domestic premises, where it is usually possible to secrete a key in proximity to the door. Locks that are key lockable from outside but have no keyhole inside and are not unlockable in any other way should not be used as legitimate occupiers may be inadvertently locked in.
