Lock Change South London — Supplied & Fitted from £135
Moving home? Lost your keys? Need an insurance-approved upgrade? We supply and fit British Standard locks across South London — same day, fixed price, no call-out fee.
Professional Lock Change Service — All Door Types, All South London Postcodes
When you need a lock change in South London, you want a qualified locksmith who arrives the same day, brings the right lock, and charges exactly what was quoted. Our lock change service covers every door type and every South London postcode — SW, SE, CR, SM and BR — with no call-out fee and a fixed price agreed before any work starts.
Whether you’ve just moved into a new home, lost your keys, or want to upgrade to a higher-security, insurance-approved lock, we supply and fit in a single visit. We carry a full range of euro cylinders, 5-lever mortice locks, and TS007 anti-snap cylinders from trusted brands including Yale, Ultion, ERA Fortress, Mul-T-Lock and Avocet ABS. No second trips, no waiting for parts.
Holding a Level 3 City & Guilds qualification — the highest vocational level in UK locksmithing — and with over 10 years serving South London, every lock we fit can meet British Standard BS3621 or TS007 3-star requirements. That means your home insurance stays valid, your property is properly secured, and the job is backed by a 12-month parts and labour guarantee. We also handle emergency lockouts, broken key extraction, and uPVC door repairs.
Every Type of Lock Change — All South London Postcodes
We supply and fit every major lock type for residential and commercial properties across SW, SE, CR, SM and BR postcodes.
Euro Cylinder Change
Replace the barrel lock on your uPVC or composite door. Standard, anti-snap or high-security options — most jobs done in under 30 minutes.
BS3621 5-Lever Mortice
British Standard 5-lever mortice locks for timber doors. Required by most UK home insurance policies. Supplied and fitted from ERA, Yale and Union.
Anti-Snap Cylinder (TS007)
Eliminate the most common forced-entry method with a TS007 3-star anti-snap cylinder. Insurance-approved, fitted same day. Best single security upgrade for any door.
uPVC Door Lock Replacement
Multipoint lock failed, gearbox seized or cylinder worn out? We carry common mechanisms for same-day replacement on all uPVC and composite doors.
Smart & Digital Lock Fitting
Keyless entry with a smart cylinder or digital lock. We supply and fit Yale, Ultion and other trusted brands — compatible with most existing door hardware.
Window & Patio Lock Changes
We replace window locks, sash locks and patio door locks across South London. Ideal for a whole-property security upgrade.
Landlord & End-of-Tenancy
Between tenancies? We change all entry locks quickly so new tenants have sole key control from day one. Receipt provided for your records.
Commercial Lock Change
Offices, shops and business premises. We supply and fit commercial-grade euro cylinders, deadbolts and multipoint locks across South London.
How It Works
Our Lock Change Process
From your first call to a working, secure lock — here's what to expect
You Call
Call or WhatsApp — we confirm arrival time on the spot, usually within 30 minutes.
We Assess
On arrival we assess your door, current lock, and your security or insurance requirements.
Fixed Quote
We give you a fixed price before touching anything. No surprises, no hidden extras.
We Fit
New lock supplied and fitted from our van stock. Most jobs done in 20–45 minutes.
We Test
Every lock is tested repeatedly before we leave — smooth operation guaranteed.
Keys Over
We hand over your new keys, confirm the 12-month guarantee, and you're secured.
Common Reasons for a Lock Change in South London
From moving day to lost keys, we cover every situation where your lock needs replacing — fast.
Moving Into a New Home
Previous owners, estate agents or tradespeople may still hold a key. A same-day lock change on moving day gives you complete peace of mind from the start.
Lost or Stolen Keys
If your keys are missing, someone could have access to your home. We gain entry and change your lock the same day — so only you hold the keys.
Insurance Upgrade Required
Your insurer requires a BS3621 or TS007 3-star rated lock? We assess your door and fit the correct standard, with documentation on request.
Worn, Stiff or Unreliable Lock
If your key sticks, the cylinder is stiff, or the lock regularly fails — replace it before it traps you outside. We carry stock for same-day fitting.
End of Tenancy — Landlords
Fast, professional lock changes between tenancies across South London. Usually attended same day or next morning. All locks guaranteed 12 months.
After an Attempted Break-In
A damaged or forced lock must be replaced immediately. We fit high-security replacements to restore proper security fast, with a full assessment of your door’s condition.
Service Area
Lock Change Coverage Across South London
Based in South London, we cover the entire area from Battersea to Croydon, Clapham to Greenwich. We offer same-day lock changes across all SW, SE, CR, SM and BR postcodes — residential, landlord and commercial jobs welcome.
Not sure if we cover your postcode? Call us — we’ll confirm instantly and give you an arrival time.
Find Us on Google
Local Locksmith — South London
Mobile service covering every SW, SE, CR, SM and BR postcode. We come to you — typically within 30 minutes.
Phone
0208 050 2017 — 24/7, every day
Hours
Open 24 hours — Mon to Sun, 365 days a year
Service Area
All South London: SW, SE, CR, SM, BR postcodes
Our Promise
Why South London Trusts Us With Their Locks
Not every locksmith is equal. Here’s what sets us apart.
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Only BS3621 & TS007 3-Star Locks Fitted
Every lock we supply meets or exceeds British Standard. Insurance-compliant as standard — we never fit cheap or uncertified hardware.
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No Call-Out Fee — Zero Hidden Costs
We never add a call-out charge. You pay for the job, nothing more. Fixed price quoted before we start.
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Same-Day Lock Change — All Postcodes
We stock locks for every door type in the van. No waiting for parts, no return visits — supplied and fitted on the first call.
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Level 3 City & Guilds Qualified
Fully qualified, not self-taught. Our credential is the highest vocational locksmith qualification in the UK.
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DBS-Checked & Fully Insured
Enhanced DBS check completed. Public liability insurance active. You have full protection on every job.
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12-Month Parts & Labour Guarantee
Any lock we fit comes with a full 12-month guarantee. If something fails, we return and fix it — free of charge.
Google Reviews
Across South London
South London
Always Free to Call
365 Days a Year
Guarantee Included
Insurance-Approved Locks — BS3621 & TS007 3-Star
Most UK home insurance policies require a British Standard lock on your main door. There are two key standards you need to know about:
BS3621 — 5-Lever Mortice Deadlock
The minimum standard for 5-lever mortice deadlocks on timber doors. Look for the BSI Kitemark on the lock body. Required by most insurers on older timber and sash doors.
TS007 3-Star — Euro Cylinder
The current standard for euro cylinder locks. A 3-star rating means the cylinder resists drilling, picking AND snap attacks. Required by most insurers on uPVC and composite doors.
Lock Brands We Supply & Fit
We only work with established, insurance-approved lock manufacturers. No cheap imports — every lock we fit is certified.
Yale
UK's best-known lock brand. BS3621 and TS007 certified cylinders. Widely accepted by insurers.
BS3621 & TS007Ultion
Highest-rated anti-snap cylinder available. 3-star TS007, Sold Secure Diamond. Lifetime manufacturer guarantee.
Best Anti-SnapERA Fortress
Heavy-duty BS3621 mortice locks for timber doors. Trusted by insurers, fitted to thousands of South London homes.
BS3621Mul-T-Lock
High-security patented cylinder technology. Favoured for commercial properties and high-risk residential.
Commercial GradeAvocet ABS
Advanced anti-snap design. TS007 3-star rated, insurance-approved, and one of the most secure euro cylinders available.
TS007 3-StarLock Change Prices South London
Fixed price agreed before any work starts. No call-out fee. All prices include the lock, fitting, and VAT.
Euro Cylinder Lock Change
Supply and fit anti-snap euro cylinder. Includes 3 keys. Standard, high-security and smart options available.
BS3621 Mortice Lock
Supply and fit 5-lever British Standard mortice lock for timber doors. Includes 2 keys. Insurance-compliant.
Anti-Snap TS007 Upgrade
Supply and fit TS007 3-star rated cylinder. Eliminates snap attacks. Includes 3 keys. Insurance-approved.
All prices include lock + fitting + VAT. Fixed quote confirmed before work starts. No call-out fee. Call 0208 050 2017 for a quote on uPVC multipoint locks or commercial jobs.
3 Things to Know Before Your Lock Change
Quick guidance so you get the right lock first time — and avoid common pitfalls.
Know Your Door Type
uPVC and composite doors take euro cylinders. Older timber doors typically have mortice locks. Not sure? Take a photo of your lock and mention it when you call — we’ll confirm the correct type before attending.
Check Your Insurance Policy
Many insurers specify a BS3621 or TS007 3-star lock on your main door. Check your policy schedule before we attend — we’ll make sure the lock we fit meets or exceeds that requirement, and can provide a receipt for your insurer.
Get a Fixed Price Upfront
Always agree the total price before work starts — including the lock, labour and VAT. We do this as standard. If any locksmith refuses to give you a fixed quote before attending, call someone else.
Watch Out for Rogue Locksmiths
Some locksmiths advertise low prices, then charge hundreds more once they’re at your door. Red flags: no fixed price upfront, no business address, reluctance to show a trade card. We’re fully transparent — you get a fixed price before we start, every time.
What Our Customers Say
155 verified 5-star Google reviews from South London customers.
Sarah M.
Clapham, SW4
“Just moved into a new flat and wanted the locks changed immediately. They were there within 45 minutes, changed all three locks and gave me keys on the spot. Brilliant service, very reassuring.”
Lock Change — Clapham
James T.
Sutton, SM1
“Lost my keys on the way home. Called at 7pm, they arrived in about 25 minutes, changed the cylinder and had me back in with new keys. Price was exactly as quoted. Couldn’t ask for more.”
Lock Change — Sutton
Rachel K.
Croydon, CR0
“My insurer told me I needed a BS3621 lock fitted before they’d cover me. These guys came out the next morning, explained everything, and fitted the correct lock. Even got a receipt with the lock details for my insurer.”
BS3621 Lock Fitting — Croydon
Lock Change South London — Frequently Asked Questions
Everything you need to know before booking.
Need a Lock Change in South London?
Call or WhatsApp now — we’ll confirm the right lock for your door, give you a fixed price upfront, and be with you the same day. No call-out fee. No hidden costs.
Available 24 hours, 7 days a week • No call-out fee • Fixed price before we start
24/7 emergency locksmith serving South London since 2015 — trusted by homeowners, landlords and businesses across Sutton, Mitcham, Wallington, Cheam, Purley and surrounding areas.