DBS-checked · Insurance-approved locks · Usually with you in 30 minutes
From £75 · no call-out fee

Lock Change & Replacement

New tenancy, lost keys or a worn-out lock — Sentinel Locksmith supplies and fits British Standard locks on the spot, keyed-alike if you want one key for every door.

4.9 on Google · 173 reviews Usually 20–40 min No call-out fee DBS-checked
Lock Change & Replacement
DBS-checked engineers No call-out fee Non-destructive entry British Standard locks Fixed price up front 12-month guarantee
Found us on Google? You're in the right place.
Ring the number and you'll speak to a person in seconds, any hour. 4.9 on Google · 173 reviews
07700 106 079
DBS-checked
Every engineer carries ID
Fully insured
£2m public liability
British Standard
BS3621 & TS007 locks
24 hours
365 days, bank holidays too
Fixed price
Agreed before we start
12-month guarantee
Parts and labour

One key for every door

Keyed-alike cylinders mean the front, back, side and patio doors all open with the same key. We do it on the spot while we're changing the locks, so you walk away with one key per person instead of a jangling bunch. Landlords and letting agents: ask about restricted-key systems where keys can only be cut with your authorisation.

Lock changes from £75

Lock changes start from £75 supplied and fitted, with no call-out fee. The engineer gives you a fixed price on the phone once he knows the door type and the number of locks, and that's the price on the receipt. Every lock and every hour of labour is guaranteed for 12 months.

When to change your locks

Moved into a new place? Lost a set of keys? Had a lodger, a cleaner or an ex move out? Lock seized, sticking or just thirty years old? Any of those is a good reason, and the peace of mind is immediate. Sentinel Locksmith changes locks across Greater Manchester, Bristol and South Wales seven days a week, with everything on the van so it's one visit, not two.

Locks your insurer will recognise

Most home insurance policies quietly require British Standard locks: a BS3621 mortice deadlock on a timber door, or a TS007 3-star (or 1-star cylinder plus 2-star handle) on uPVC and composite doors. We fit exactly those, and you get a dated receipt with the lock grade printed on it to keep with your policy. Cheap cylinders from the DIY shed snap in seconds — ours don't.

Lockouts
from £59
Lock changes
from £75
Call-out fee
none, ever
  • DBS-checked, fully insured engineers
  • British Standard locks on every van
  • Non-destructive entry wherever possible
  • 12-month guarantee on parts and labour
FAQ

Questions people ask us

Can you change my locks today?+

Usually, yes. We carry the common British Standard locks and cylinders on every van, so most lock changes are done the same day in a single visit.

Will my insurance accept the lock?+

Yes. We fit BS3621 mortice locks and TS007 anti-snap cylinders, which are what insurers ask for, and give you a receipt showing the grade.

Can I have one key for all my doors?+

Yes — keyed-alike cylinders are fitted on the spot, so one key opens every external door.

Do you do car keys?+

No. Homes, flats, shops and offices only.

Other services

Emergency Lockout Service

Locked out of your house, flat or shop? Sentinel Locksmith opens the door fast and without damage, 24 hours a day — usually within 30 minutes.

From £59

Burglary Repair & Boarding Up

Forced door or broken frame after a break-in? Sentinel Locksmith boards up, repairs the damage and fits new locks the same day, with a written report for your insurer.

Fixed quote

Moving House Lock Change

You don't know who still has keys to your new place. Sentinel Locksmith changes every external lock in one visit — often the day you complete — all keyed alike.

Fixed quote
Recent jobs

Real doors, real engineers

Lockouts · lock changes · burglary repairs · uPVC
Engineer at the door — Sentinel Locksmith
Engineer at the door
New cylinder fitted — Sentinel Locksmith
New cylinder fitted
Van stocked and ready — Sentinel Locksmith
Van stocked and ready
Lock change completed — Sentinel Locksmith
Lock change completed
Non-destructive entry — Sentinel Locksmith
Non-destructive entry
Secured and guaranteed — Sentinel Locksmith
Secured and guaranteed
Reviews

What our customers say

4.9 on Google · 173 reviews

“Rang at half six on a Sunday morning, engineer with us by seven. Door open with no damage, new cylinder fitted, sorted before the kettle boiled.”

Gareth L. · Bolton · Emergency lockout · 3 days ago

“Fixed price quoted on the phone, same price paid. Showed me the kitemark on the new lock for the insurance. Really reassuring.”

Amira H. · Wigan · Lock change · 1 week ago

“Shop shutter lock snapped at opening time. Sentinel had us trading by half nine. Can't ask for more.”

Lee C. · Newport · Commercial · 2 weeks ago
Areas we cover

Lock changes across 10 towns

We don't do car keys. Sentinel Locksmith is a home and business locksmith. For vehicle lockouts or key programming you'll want an auto locksmith.

Lock changes, sorted today.

24/7 engineers · Insurance-approved · No call-out fee

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