Streatham Common Locksmith Service Team
Local locksmith team
2 Sep 2026 4 min read
You push the key in, give it the usual turn — and nothing happens. It just sits there, stiff as anything, refusing to budge. Whether you are standing on your doorstep in Streatham Common at 11pm or trying to get into your flat on a cold morning before work, a key that will not turn in the lock is one of those problems that feels small until it is very much not. The good news is that there are a handful of clear reasons why this happens, a few gentle things you can safely try yourself, and a point at which the smartest move is to put the key away and call a professional before the situation gets worse.
This guide walks you through the most common causes — worn cylinders, dropped door frames, debris in the barrel — what you can safely attempt without causing damage, and when to stop. If you are already past the point of trying and simply need someone out to you, call 020 4530 9860 and we will send a locksmith straight away, usually with you within about 30 minutes.
Frequently asked questions
My key turns slightly but then stops — is the lock broken or is it the key?+
It could be either, or a combination of both. A key that is worn, bent, or slightly the wrong cut can enter a cylinder and turn partway before the pins fail to align fully. At the same time, a worn or gritty cylinder can stop a perfectly good key mid-rotation. The safest first step is to try the door gently with any available spare key. If the spare works smoothly, the original key is the problem. If neither key turns properly, the cylinder itself is likely worn or under mechanical stress — perhaps from a dropped door or a misaligned multipoint mechanism. In either case, avoid forcing the rotation, as this risks snapping the key inside the barrel.
What do I do when locked out of my house late at night?+
Stay calm and work through the basics first: is there a spare key with a trusted neighbour or family member? Is there a back entrance that may be unlocked? If you rent, does your letting agent operate an out-of-hours line? If none of those options are available, call a professional 24-hour locksmith. We cover Streatham and the surrounding area around the clock and can usually be with you in about 30 minutes. We will confirm the exact price before setting off, so you know what to expect. Call 020 4530 9860 at any hour — evenings, weekends, and bank holidays included.
Should I change the lock after a key-won't-turn incident?+
It depends on what the locksmith finds when they attend. If the cylinder is worn, the right answer is usually to replace it rather than repair it, since a worn cylinder will cause the same problem again and may also be a security risk. If the issue was simply a dropped door putting pressure on the lock, re-hanging the door or adjusting the hinges may resolve things without needing a full lock change. Where a cylinder is old, lacks anti-snap features, or does not meet the BS3621 standard your insurer may ask for, a replacement is worth considering at the same visit. We will give you a clear recommendation based on what we find, with an up-front price confirmed before any work begins.
How much does it cost to call out a locksmith in Streatham?+
The final price depends on a number of factors: the type and age of the lock, whether parts such as a new cylinder need to be supplied, the time of day, and travel distance. We always confirm an exact quote on the phone before anyone sets off, so there are no unexpected costs when we arrive. We do not give vague ranges and then adjust on the doorstep — what we tell you on the call is what you pay. If you would like a quote for your specific situation, call 020 4530 9860 and we will talk it through with you.
