Advice topic
Repairing or Replacing a Lock
Guides to help you understand your locks and make a sensible decision about repair, partial replacement or a new lock, without paying for more than the door needs.
Repair or Replace a Lock? How the Decision Is Made
When a faulty door lock can be repaired, when only part needs changing and when a new lock is the better choice: the factors a locksmith weighs, explained.
Mortice, Cylinder and Multipoint Locks: What's the Difference?
How mortice, cylinder and multipoint door locks work, how to tell which one your door has, how each one typically fails and what can be repaired or replaced.
Choosing a Replacement Lock That Fits Your Existing Door
Backset, case size, centres, cylinder length and profile, door thickness and handing: the measurements and choices that decide whether a new lock fits your door.