Guides & tutorials
Everything you need to replace a lock with confidence
Written by locksmiths, in plain English, with photos. No jargon, no scare tactics.
Measuring
How to measure a euro cylinder
Two numbers, one screw, five minutes. Get the size right first time.
4 min read FittingHow to change a euro cylinder yourself
One screw, turn the key, pull. Step by step with photos.
6 min read SecurityWhat TS007 stars actually mean
1-star, 2-star handles, 3-star, Sold Secure Diamond: which one your insurer expects.
5 min read SecurityLock snapping: why it happens and how to stop it
The most common uPVC break-in method, explained, and the £44 fix.
4 min read ChoosingKey both sides or thumbturn?
Fire safety, insurance and letterbox fishing: how to choose.
3 min read ChoosingKeyed alike: one key for every door
How to order a matching set for front, back and side doors.
3 min read ProblemsKey won't turn or door won't lift and lock
Is it the cylinder, the gearbox or the hinges? How to tell before you buy anything.
5 min read LandlordsChanging locks between tenancies
What the law says, what to keep records of, and the cheapest compliant option.
6 min read Photo finderHow to photograph your cylinder for the AI finder
Where the 10p goes and why white paper matters.
2 min read