5 Common Locksmith Problems and When to Call a Professional

The problems that come up most

These are the jobs locksmiths are most commonly booked for. Catching them early almost always costs less:

• locked out with keys inside
• a key snapping in the lock
• a uPVC door that won't lock or unlock
• a lock that spins without engaging
• moving into a new home and needing locks changed

What you can safely check yourself

Before calling anyone, gather information: when the problem started, whether it's getting worse, and clear photos. This helps a professional give you a realistic first assessment and helps you describe the job accurately when collecting quotes.

Basic observation is always safe; DIY repair is not always. If the problem involves gas, electrics, working at height or the structure of your home, stop at observation and call a professional.

Signs it's time to book someone

Book a professional when the problem is getting worse, when it involves safety, when your own attempts haven't held, or when you simply don't know the cause. A correct diagnosis is usually cheaper than a wrong repair.

For context on cost: A standard lockout typically costs £60–£120 during working hours; out-of-hours call-outs run £100–£220. Replacing a standard cylinder lock costs £70–£120 including parts.

Choosing who to call

Anyone can call themselves a locksmith in the UK. Master Locksmiths Association (MLA) approved companies are vetted, inspected and DBS-checked — check the MLA directory rather than trusting a logo.

Check recent reviews before booking — Hammerscore company pages for locksmiths combine ratings from several platforms, and the low-star reviews tell you most about how problems were handled.