As professional locksmiths serving customers across the UK, we see the same problems time and again. Understanding the most common locksmith issues — and knowing how to respond — can save you time, money and stress. Here's our guide to the most frequent problems we encounter and how we solve them.

1. Lockouts

The most common call we receive is from someone who has locked themselves out of their home, office or car. Lockouts happen to everyone at some point — keys left inside, lost keys, or a lock that's jammed. Our locksmiths use specialist tools to open doors non-destructively in most cases, getting you back inside quickly without damage.

Prevention: Leave a spare key with a trusted neighbour, or install a key safe. Consider a smart lock with a PIN code backup.

2. Broken Keys

Keys break in locks more often than you might think — particularly older, worn keys or keys that have been bent or stressed. A broken key in a lock requires specialist extraction tools to remove without damaging the lock. In most cases, we can extract the broken key and cut a new one on the spot.

Prevention: Replace worn or bent keys before they break. Don't use excessive force when a key is stiff — this usually indicates a problem with the lock that should be addressed.

3. Jammed or Stiff Locks

Locks can become stiff or jammed for several reasons — lack of lubrication, worn components, a misaligned door, or damage from an attempted break-in. A stiff lock is a warning sign that shouldn't be ignored — it will eventually fail completely, often at the worst possible moment.

Prevention: Lubricate locks annually with a dry lubricant (not WD-40, which attracts dirt). Have stiff locks inspected and repaired promptly.

4. UPVC Door Problems

UPVC doors are prone to a specific set of problems — dropped handles, misaligned multi-point locking mechanisms, and worn gearboxes. These issues often prevent the door from locking properly, which is a serious security concern. Our locksmiths carry parts for all major UPVC door brands and can usually fix these problems on the same visit.

5. Lock Snapping

Lock snapping is the most common burglary technique for UPVC doors. If you've been a victim of lock snapping, or if you have standard euro cylinders on your UPVC doors, upgrading to anti-snap cylinders is urgent. Keys4U can supply and fit anti-snap cylinders across the UK, usually within the same day.

6. Lost or Stolen Keys

If your keys have been lost or stolen, you should change your locks as soon as possible. You don't know who might have found them or whether they know your address. Keys4U can change your locks quickly and at a competitive price, giving you peace of mind.

7. After a Burglary

After a break-in, your priority is to secure the property. Keys4U provides emergency burglary repair services including boarding up, lock replacement and door frame repair. We can usually attend within 30 minutes and will ensure your property is secure before we leave.