Door Locks
Securing a front or back door starts with matching the right lock to the door. This range covers each type of door lock, from a 5 lever mortice lock and 3 lever mortice deadlocks to a euro cylinder lock, nightlatches and key blanks, with brands including Yale, Era, Union, Smiths Locks and Securit.
A cylinder lock turns a euro profile mechanism in uPVC and composite doors, and lock cylinder replacement parts come in different lengths, brass and nickel finishes and double or thumb-turn versions. Era locks and Yale door locks sit beside door lever lock sets with a key and sash locks, while Smiths Locks snap-safe and BS 1 star euro brass cylinders cover insurance-minded upgrades.
Measure the door thickness and, for a euro cylinder, the inside and outside lengths from the screw hole. Check whether your insurer needs a 5 lever or BS-marked lock, and match the finish to your door handles. Lever count and a British Standard mark are useful when comparing options.
Filters
268 products
How to choose a door lock
Choose by door type, then check the security standard.
| Lock type | Best for | Things to know |
|---|---|---|
| Mortice sashlock | Timber front, back and internal doors | Has latch and bolt; 5-lever for external use |
| Mortice deadlock | Extra security on timber doors | Bolt only; look for BS3621 |
| Night latch | Timber front doors as a main or second lock | Deadlocking models give better security |
| Euro cylinder | uPVC, composite and aluminium doors | Choose anti-snap, such as TS007 3-star |
| Multipoint lock parts | uPVC and composite door locking systems | Measure the backset, centres and faceplate |
Door Locks: frequently asked questions
What is a 5 lever mortice lock?
A 5 lever mortice lock sits inside the door edge and uses five levers, giving a higher level of security than 3 lever mortice locks. Many insurers ask for BS 3621 locks on external doors.
How do I measure a euro cylinder lock?
Measure from the centre screw hole to each end, inside and outside, and fit a cylinder that sits flush with the handles.
What does a euro lock fit?
Euro locks fit uPVC, composite and many wooden doors that have a euro profile mortice or multipoint case.
What is a nightlatch?
A nightlatch is a surface-mounted lock that latches automatically and is opened with a key from outside. It is often used alongside a mortice lock.
Can I get spare key blanks?
Key blanks are available for various lock makes and profiles. Match the make and series printed on the key.
Buying in bulk or for your business?
Landlords, trades and facilities teams can ask us for a quote on larger quantities.