Burglary Lock Change Nottingham: What to Do

After a break-in or an attempted one, the single most important security decision is usually the simplest to state and the hardest to feel confident about: which locks to change, and how quickly. A burglary lock change in Nottingham is not about swapping a barrel for the sake of it. It is about removing the uncertainty a break-in leaves behind, closing the exact weakness that was exploited, and making sure your home insurance still holds if you need to claim. This guide focuses on that immediate decision, why locks should usually be changed even when they still turn, which ones to prioritise, and the sensible order to do it in.

Why the lock must change even if it still works

The instinct after a break-in is understandable: if the key still turns and the door still shuts, why replace anything? There are three reasons a working lock is not the same as a safe one.

• Hidden internal damage. A cylinder that has been snapped, drilled or levered can still operate while being far easier to defeat a second time. Force distorts internal components you cannot see. A lock that “feels fine” may have lost most of its resistance.
• Key security. If keys were taken, or if there is any doubt about who now has a copy, the lock is compromised regardless of its condition. Changing it is the only way to be certain old keys no longer work, which matters especially in shared houses, rentals and anywhere keys have circulated.
• The method is now known. Whoever targeted the property found a way in, or tried to. Leaving the same lock in place leaves the same invitation. A change is the chance to close that specific route.

There is also the question of whether an attempted break-in counts. It does. A cylinder that has been part-snapped or a lock that has been attacked but held is weakened, and it should be treated as compromised even though the intruder did not get in.

Which locks to prioritise

Not everything needs changing at once, and a good locksmith will not pretend it does. The priority order after a break-in is usually straightforward.

1. The point of entry, or attempted entry

The lock that was forced, attacked or bypassed is first. On a uPVC or composite door that means the cylinder, and often the multipoint mechanism if the door was strained. On a timber door it may mean the mortice lock, the night latch, or both. This is the lock that has already been tested and failed, so it takes priority over everything else.

2. Any lock a stolen key fits

If keys were taken, every lock those keys open is compromised, not just the one at the point of entry. Back doors, side doors, patio doors and any communal entrance need to be changed or the affected cylinders swapped so the missing keys become useless.

3. Matching weak points elsewhere

If the front cylinder was an old, snap-vulnerable euro type, the back one is very likely identical and just as exposed. You do not have to replace everything, but it makes sense to change like-for-like weaknesses while the locksmith is already there, rather than wait for the next attempt to find them.

Repair or replace: the honest answer

People often ask whether the lock can simply be repaired. Sometimes the surrounding door hardware can, but the lock itself, if it was directly attacked, is usually better replaced. A patched cylinder can feel usable while offering a fraction of its original protection, which is the worst of both worlds: it looks solved and is not. The repair-first approach that makes sense for a worn or sticking lock does not apply to one that has been forced. Where only the cylinder was targeted, that alone may need swapping; where the whole locking mechanism was strained, the handle mechanism or multipoint mechanism may need attention too. The right call depends on the door and how entry was gained, and it should be explained to you plainly before any work starts.

Insurance and the British Standard question

A lock change after a break-in is also the moment to get your locks to the standard your insurer expects, so a future claim is not at risk. UK home insurance policies typically specify a recognised lock standard for final exit doors, and fitting locks that do not meet it can leave a claim exposed, even one unrelated to a break-in.

Door type	What insurers usually want	What that means in practice
Timber front or back door	BS3621 five-lever mortice deadlock (BSI Kitemark)	A British Standard mortice lock, stamped with the kitemark and BS3621
uPVC or composite door	TS007 3-star cylinder, or 1-star cylinder with 2-star hardware	An anti-snap cylinder to the correct star rating; BS3621 cannot be fitted to these doors

The key point is that BS3621 is a timber-door standard and cannot be fitted to a uPVC or composite door at all. On those doors the equivalent is a TS007-rated anti-snap cylinder. It is always worth checking your policy wording for the exact requirement, or asking the locksmith to advise on what meets it for your specific doors. Getting this right at the point of the lock change means you are not left non-compliant later.

What to do straight after a break-in

The immediate steps are practical, and taking them in order keeps a stressful situation manageable.

• Make sure everyone is safe. If there is any chance the intruder is still nearby, stay out and call 999. Otherwise, report the burglary to the police on 101.
• Get a crime reference number. You will need it for any insurance claim, so note it down when the police give it to you.
• Photograph the damage before touching anything. Clear pictures of the forced lock, door and frame support both the police report and your insurance claim.
• Follow police guidance on preserving the scene. If they ask you to leave things untouched briefly, do that first.
• Secure the property. Once you are clear to proceed, get the entry point made safe the same day. A door that cannot be locked should not be left overnight.

Securing the property and changing the compromised lock are often the same visit. For the wider job of repairing damaged doors, frames and windows and dealing with the insurer, see our guide to after burglary service and our door repair page.

When to call a locksmith

Call as soon as the property is safe to approach and the police have given you the go-ahead. A lock change after a break-in is time-sensitive for two reasons: the property is exposed until it is done, and the sooner it is secured the sooner you can stop worrying about a repeat overnight. Same-day attendance is the standard for post-break-in work, and for most people it is the difference between a restless night and a settled one. If the break-in was only an attempt and the door still locks, it is still worth having the weakened lock assessed and changed rather than trusting it again.

Pricing for a burglary lock change

Max the Locksmith charges £85 plus parts if any are needed, with no call-out fee and no out-of-hours surcharge, and the same price applies across Nottingham, Derby, Mansfield, Loughborough and the surrounding East Midlands. A single anti-snap cylinder swap is a quick job; a British Standard mortice replacement or a full multipoint mechanism repair with alignment work involves more parts and time. Either way, the cost of parts is explained and agreed before the work begins, so there are no surprises added on once the job is under way. Most burglary lock changes are completed on the same visit, and the work is backed by a fully insured, DBS-checked, Checkatrade-approved service with hundreds of local reviews behind it. If you need a locksmith the same day, our emergency locksmiths Nottingham page has the fastest way to get hold of Max.

Frequently asked questions

Do I really need to change the locks if they still work after a break-in?

In most cases, yes. A lock that has been forced can still turn while offering far less resistance than it did before, and if keys were taken the lock is compromised regardless of its condition. Changing it is the only way to be sure old keys no longer work and that a weakened lock is not relied on again.

Which locks should I change first?

Start with the lock at the point of entry or attempted entry, since it has already failed a test. Next, change any lock that a stolen key would fit. After that, consider matching weak points elsewhere, such as an identical old cylinder on the back door, so the same method cannot simply be repeated.

Will my insurance be affected if my locks are not British Standard?

Possibly. Most UK home insurance policies specify a recognised standard for final exit doors, such as BS3621 on timber doors or a TS007 3-star cylinder on uPVC and composite doors. Fitting locks that meet your policy’s requirement keeps a claim valid. It is worth checking your policy wording or asking the locksmith to advise on what meets the standard for your doors.

What should I do immediately after a break-in?

Make sure everyone is safe and call 999 if the intruder may still be nearby, or 101 to report it otherwise. Get a crime reference number for your insurer, photograph the damage before touching anything, follow any police guidance on preserving the scene, and then get the property secured the same day.

Can the locks be changed the same day?

Yes. Post-break-in lock changes are treated as urgent, and same-day attendance is the standard. In most cases the property is secured and the compromised locks changed on the same visit, with the necessary cylinders and mechanisms carried in the van.