Door Locks

Whether you’re replacing a worn mechanism or upgrading security, our range of mortice door locks covers the most common options for timber doors—3 lever and 5 lever locks, sashlocks, deadlocks and deadbolts, available in a wide choice of backsets and case sizes to suit both older and modern joinery.

For internal doors, a 3 lever mortice lock is a popular choice where privacy is needed (bedrooms, home offices) without the heavier security requirements of an external door. For front and back doors, many homeowners choose a 5 lever mortice lock for stronger resistance and a more robust feel, making it a dependable option for everyday security upgrades.

If your door uses handles as well as a key, a sashlock combines a latchbolt (for handle operation) and a deadbolt (for locking) in one case—ideal for many external doors and traditional handle sets. For a dedicated security lock used alongside a nightlatch or as part of a two-lock setup, a mortice deadlock gives straightforward, key-operated locking. If you want a simpler “bolt-only” style, a deadbolt provides solid locking without a latch function, depending on the door and furniture setup.

Choosing the correct lock starts with measurements. Check the backset (distance from the door edge to the centre of the keyhole/spindle) and confirm the case size so the new lock fits the existing mortice pocket with minimal alteration. Once you’ve matched the backset and case size, you can then choose the lock type and security level that best suits the door’s purpose.

Browse the category to compare lever counts, lock styles, backsets and case sizes and find the right fit for your project.