Written by Mark Reid,
Trades Editor ·Verified 14 September 2026
Slough's mix of housing throws up more locksmith work than you'd think. You've got Victorian terraces around Chalvey with older mortice locks that seize up or need replacing to meet insurance standards, newer estates in Britwell and Langley with uPVC doors where the multipoint locking mechanism wears out, and plenty of flats near the town centre with communal entry systems that need a locksmith who understands fob and buzzer setups as well as traditional keys. Add in the trading estates around Slough Trading Estate itself, where commercial units need shutter locks and access control fitted or repaired, and you can see why a one-size-fits-all locksmith doesn't always cut it here. Whether it's a snapped key in a Yale lock at 11pm or a full lock upgrade after a break-in on a street off Bath Road, knowing who's genuinely local and reliable matters.
The locksmiths featured on this page are pulled from public business listings and ranked mainly by review rating and how many reviews they've built up, with a modest boost for those who have a working website and phone number listed. We read through each business's homepage to check that locksmith work is actually their main trade, which stops unrelated tradespeople or general handymen sneaking onto a page like this. Listings flagged as permanently closed get stripped out automatically, so you shouldn't find dead ends here. Where you spot a Trust Verified badge, that business has gone further and passed our full verification, covering trade qualifications and accreditations, public liability insurance, trading history, customer review history, and registered company details. Our How We Verify page sets out exactly what that involves. Businesses without the badge haven't been through that process with us, so it's worth doing your own checks before you hand over a key or let anyone into your home.
Before booking, ask the locksmith what identification they'll carry and whether they're happy to provide a receipt or invoice with their trading name and contact details on it. For anything beyond a simple lockout, such as upgrading to an anti-snap cylinder or fitting a new multipoint lock, ask for a written quote that breaks down parts and labour, and check whether the price includes a callout fee separately. It's worth getting two or three quotes if the job isn't urgent, particularly for bigger work like replacing external doors or fitting safes, since prices for the same job can vary by £50 or more between locksmiths in the same postcode. If you're locked out and need someone fast, ask upfront how quickly they can attend and whether there's an out-of-hours surcharge, so there are no surprises when the bill arrives.
How We Select & Rate The Best Locksmiths in Slough
Ranking is based on review rating and review count taken from public business listings, with a small lift given to businesses that show a working website and phone number. We check each business's homepage to confirm locksmith work is genuinely their main trade, and any listings flagged as permanently closed are removed automatically. Businesses marked Trust Verified have gone through our full verification process, covering trade qualifications and accreditations, public liability insurance, trading history, customer review history, and registered company information; see our How We Verify page for the complete list of checks. Other businesses on this page haven't been independently verified by us, and their inclusion isn't an endorsement. Always do your own checks before hiring.
Recommended and Featured listings are paid placements, so a business's fee affects whether and where it appears. Every other listing is ranked on rating and review count from third-party business listings. How we rank & verify →
Positive Locksmiths Ltd Slough provides lock repairs, replacements and emergency lockout assistance across the local area. The firm has built up a substantial track record, reflected in 443 reviews and a 4.9 rating, suggesting consistency across jobs ranging from lock changes to broken key extractions. Work covers both domestic and commercial properties in Slough.
Lock changes and emergency lockout work make up much of Countrywide's calling in Slough, with call-outs covering homes and commercial premises alike. Based in the SL1 area, the firm has built a track record reflected in a 4.3 rating from 62 reviews. Rekeying and repairs to existing hardware are handled alongside new installations.
Families and households across Slough call on Caroboa Locksmith Slough when doors won't lock, keys go missing, or a break-in leaves a property vulnerable. The firm handles lock repairs, replacements and emergency callouts, with a 5-star record built from nine reviews. Its base in the SL1 4HA area keeps response times manageable for local residents.
Families and households across Slough call on Lockforce Locksmith Slough for lockouts, lock changes and general security repairs. The firm has built up a small but perfect record, five reviews all rating it five stars. Jobs are typically handled without fuss, suiting residents who need a lock sorted rather than a sales pitch.
Transparency notice: Recommended and Featured listings are paid placements, so a business's fee affects whether and where it appears. All other listings are ranked by a combined score drawn from ratings and review counts published on third-party business listings, plus basic completeness signals such as a working website and phone. A Trust Verified badge means we have independently checked that business's documents; businesses without it have not been independently verified by us. How we verify →
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A straightforward daytime lockout typically runs from around £60 to £100, including the callout. Evening, weekend or emergency callouts push that up, often to £100 to £150, since most locksmiths charge more outside normal hours. Fitting a new uPVC multipoint lock usually costs £120 to £220 depending on the mechanism, while upgrading to an anti-snap euro cylinder is often £70 to £120 fitted. Prices vary between locksmiths in the same area, so getting two or three quotes for anything non-urgent is sensible and could save you a decent amount.
Can a locksmith in Slough open my door without damaging it?
Most experienced locksmiths will try non-destructive entry methods first, such as picking or bypassing the lock, especially on older mortice or Yale locks. Modern uPVC multipoint locks are trickier and sometimes require drilling if the mechanism has failed internally rather than just being locked. Ask before they start whether they expect to need destructive entry, and get a rough price for both scenarios so you're not caught out if drilling turns out to be necessary.
How quickly can a locksmith reach me in Slough for an emergency lockout?
Response times depend on where you are and what time it is. Locksmiths covering the town centre, Chalvey or Langley often quote 30 to 60 minutes during the day, while areas further out like Colnbrook or Wexham might take a bit longer. Late-night callouts can take longer too, as fewer locksmiths run a genuine 24-hour service. It's worth asking for an honest estimate when you call rather than assuming they'll arrive within the hour.
Do I need to upgrade my locks to meet home insurance requirements?
Most UK home insurance policies specify that external doors need locks meeting British Standard BS3621, particularly for mortice locks on wooden doors. If you're not sure what's currently fitted, a locksmith can check and tell you whether your existing locks meet that standard. If you've had a break-in or your locks are older, it's worth confirming with your insurer exactly what they require before paying for an upgrade, so you don't fit something that still falls short.
What should I do if I've lost my keys and I'm worried about security?
If your keys are lost rather than stolen, changing the lock cylinder rather than replacing the whole lock is usually enough and cheaper too, often £50 to £90 for a uPVC cylinder swap. If the keys were stolen or you think someone knows your address, it's safer to replace the full lock mechanism. Either way, get it done as soon as possible rather than waiting, particularly if the keys had your address on them or were on a fob linked to your car.
How can I check a locksmith in Slough is trustworthy before I let them in?
Ask for photo identification when they arrive and check it matches the name on their van or paperwork. Look at their recent reviews yourself rather than relying on a star rating alone, since patterns in what people say matter more than the average. Ask if they're a member of a recognised trade body such as the Master Locksmiths Association, and don't be afraid to ask for a written quote before work starts. If a business has a Trust Verified badge on this page, that means we've checked qualifications, insurance, trading history and more ourselves. Where that badge isn't present, it's down to you to do that legwork before booking.
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