What is BS3621 and do I need it?

BS3621 is the British Standard for thief-resistant locks required by most UK home insurance policies. If your policy specifies BS3621 (most do), fitting anything below it can void claims after a break-in.

How much does a UK lock change cost?

Most UK lock changes on LockSafe UK are £80–£200 fully fitted, depending on lock type (cylinder, mortice, or multi-point) and brand. The exact price is fixed before the locksmith arrives.

Can you change my locks the same day I move in?

Yes. Same-day BS3621 lock changes are available across most UK postcodes. Post the job before 2pm and you'll usually be fitted and tested by the evening.

Will you change all my locks or just the front door?

Whatever you need. Tell us how many doors and the lock type on each, and the locksmith quotes a single fixed price covering all of them — front, back, patio, side gate.

Do I get the old keys back?

The old locks are removed and disposed of so no copies remain in circulation. You receive the new keys (typically 3 per cylinder) along with a digital invoice and photos of the fitted hardware.

What if I lose a key in the future?

Save the digital invoice from your job — it lists the lock model and brand. Cutting a spare from a verified LockSafe locksmith is usually £8–£15 per key on a follow-up job.

Lock Change — Insurance-Compliant, Fitted Today.

Name: LockSafe UK
Address: Egham, Surrey, GB
Telephone: +44 20 4577 1989
Price range: ££

British Standard BS3621 locks. Verified locksmiths. Fixed quote.

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DBS-checked

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Lock Change

Lock Change — Insurance-Compliant, Fitted Today.

British Standard BS3621 locks. Verified locksmiths. Fixed quote.

DBS-checked locksmiths
24/7 across the UK
Insurance-ready paperwork

Indicative pricing: £80–£220 · quote agreed in writing before any work starts.

BS3621 lock fitters covering your area today.

Standard fitted: BS3621 (insurance-approved)
Lock types: Cylinder, mortice, multi-point
Lead time: Same-day in most areas
Price band: From £80 fixed
Disposal: Old locks removed & disposed

In short

Lock changes on LockSafe UK fit insurance-approved British Standard BS3621 locks — cylinder, mortice, or multi-point — with a fixed price agreed before work starts. Verified, DBS-checked locksmiths fit and test the same day across most UK postcodes.

Sound familiar?

If you're reading this, you're probably feeling one of these

You've moved in and have no idea who else has keys to your front door.
You've lost your keys and the panic is real — anyone could find them with your address.
Your home insurance demands BS3621 locks and you don't know what that means.
You're worried a generic "lock change" will leave you with cheap locks and a void insurance policy.

You're not wrong to feel that way. That's exactly why LockSafe UK exists.

How LockSafe handles lock change

Whether you've moved house, lost your keys, or want better security, replacing your locks should be simple. We connect you with verified locksmiths who fit insurance-approved British Standard BS3621 locks at a price agreed up front.

Same-day fitting available across most of the UK.

Here's exactly what you get when you book lock change through LockSafe

No vague promises. Every single one of the points below is part of the standard LockSafe job — not an upsell, not a premium tier.

1
Insurance-approved BS3621 locks, every time
British Standard BS3621 is the level your home insurance policy almost certainly requires. We fit it as standard — not as an upsell.
2
Cylinder, mortice, or multi-point — diagnosed before quoting
Tell us the door type and we'll match you with a locksmith who specialises in that mechanism. No surprises on arrival.
3
Old locks removed and disposed of
Whether you've lost keys or want to lock out an ex-tenant, the old locks are gone — no lingering copies floating around.
4
Same-day fitting across most UK postcodes
Posted by 2pm? Most lock changes are fitted, tested, and signed off the same day.
5
Fixed price for the lock and the labour
One quote covers everything: lock, fitting, disposal, testing. No "oh, that lock's actually £40 more".

How it works

Three steps. About 60 seconds of your time. Then verified locksmiths compete for your job — not the other way around.

1
Post your job in 60 seconds
Tell us the problem, your postcode, and how urgent it is. No card details required up front.
2
Get upfront quotes from verified locksmiths
DBS-checked, insured locksmiths quote you a fixed price — agreed before any work starts.
3
Track arrival, pay only when the job is done
Live GPS tracking, timestamped photos, and a digital invoice. Insurance-ready paperwork included.

LockSafe vs the typical UK locksmith

Most UK lockouts and lock changes still happen on the doorstep handshake model. Here's what changes when you book through LockSafe.

Comparison of LockSafe UK service against a typical UK locksmith for lock change
	LockSafe UK	Typical locksmith
Price agreed before work starts	Yes — fixed quote, in writing	Often quoted on arrival, after pressure
Verified, DBS-checked locksmith	Every locksmith vetted and insured	Unverified — many use rogue traders
Live GPS tracking	Yes — see ETA in real time	No — you wait blind
Insurance-ready paperwork	Timestamped photos + digital invoice	Handwritten receipt, if any
24/7 cover across the UK	Yes, every day of the year	Out-of-hours surcharges, patchy cover

The LockSafe anti-stitch-up guarantee

If a quoted price ever changes mid-job without your written approval, we'll step in. Every job on LockSafe UK is covered by our anti-stitch-up guarantee — the price you agreed is the price you pay.

Frequently asked questions

The questions UK customers actually ask before booking lock change.

What is BS3621 and do I need it?
BS3621 is the British Standard for thief-resistant locks required by most UK home insurance policies. If your policy specifies BS3621 (most do), fitting anything below it can void claims after a break-in.
How much does a UK lock change cost?
Most UK lock changes on LockSafe UK are £80–£200 fully fitted, depending on lock type (cylinder, mortice, or multi-point) and brand. The exact price is fixed before the locksmith arrives.
Can you change my locks the same day I move in?
Yes. Same-day BS3621 lock changes are available across most UK postcodes. Post the job before 2pm and you'll usually be fitted and tested by the evening.
Will you change all my locks or just the front door?
Whatever you need. Tell us how many doors and the lock type on each, and the locksmith quotes a single fixed price covering all of them — front, back, patio, side gate.
Do I get the old keys back?
The old locks are removed and disposed of so no copies remain in circulation. You receive the new keys (typically 3 per cylinder) along with a digital invoice and photos of the fitted hardware.
What if I lose a key in the future?
Save the digital invoice from your job — it lists the lock model and brand. Cutting a spare from a verified LockSafe locksmith is usually £8–£15 per key on a follow-up job.

Lock Change near you

We cover 79 towns and cities across the UK. Pick yours for local pricing, response times and verified locksmiths.

Lock Change in London Lock Change in Manchester Lock Change in Liverpool Lock Change in Birmingham Lock Change in Coventry Lock Change in Wolverhampton Lock Change in Leeds Lock Change in Sheffield Lock Change in Bradford Lock Change in Hull Lock Change in York Lock Change in Newcastle upon Tyne Lock Change in Sunderland Lock Change in Middlesbrough Lock Change in Nottingham Lock Change in Leicester Lock Change in Derby Lock Change in Cambridge Lock Change in Norwich Lock Change in Peterborough Lock Change in Ipswich Lock Change in Brighton & Hove Lock Change in Oxford Lock Change in Reading Lock Change in Southampton Lock Change in Portsmouth Lock Change in Milton Keynes Lock Change in Bristol Lock Change in Plymouth Lock Change in Exeter Lock Change in Bath Lock Change in Bournemouth Lock Change in Glasgow Lock Change in Edinburgh Lock Change in Aberdeen Lock Change in Dundee Lock Change in Cardiff Lock Change in Swansea Lock Change in Newport Lock Change in Belfast Lock Change in Stoke-on-Trent Lock Change in Wakefield Lock Change in Doncaster Lock Change in Preston Lock Change in Blackpool Lock Change in Bolton Lock Change in Stockport Lock Change in Warrington Lock Change in Chester Lock Change in Huddersfield Lock Change in Halifax Lock Change in Lancaster Lock Change in Worcester Lock Change in Gloucester Lock Change in Cheltenham Lock Change in Lincoln Lock Change in Northampton Lock Change in Stevenage Lock Change in Chelmsford Lock Change in Colchester Lock Change in Watford Lock Change in Luton Lock Change in St Albans Lock Change in Slough Lock Change in Guildford Lock Change in Crawley Lock Change in Maidstone Lock Change in Canterbury Lock Change in Eastbourne Lock Change in Worthing Lock Change in Poole Lock Change in Salisbury Lock Change in Truro Lock Change in Carlisle Lock Change in Wrexham Lock Change in Inverness Lock Change in Stirling Lock Change in Perth Lock Change in Derry/Londonderry

Ready to get this sorted — properly?

Post your job in 60 seconds. Verified, DBS-checked locksmiths quote you upfront. You see the price before any work starts. That's it. That's the platform.

Indicative pricing for lock change: £80–£220. Fixed quote confirmed before any work begins.

Lock Change — Insurance-Compliant, Fitted Today.

Lock Change — Insurance-Compliant, Fitted Today.

In short

If you're reading this, you're probably feeling one of these

How LockSafe handles lock change

Here's exactly what you get when you book lock change through LockSafe

Insurance-approved BS3621 locks, every time

Cylinder, mortice, or multi-point — diagnosed before quoting

Old locks removed and disposed of

Same-day fitting across most UK postcodes

Fixed price for the lock and the labour

How it works

Post your job in 60 seconds

Get upfront quotes from verified locksmiths

Track arrival, pay only when the job is done

LockSafe vs the typical UK locksmith

The LockSafe anti-stitch-up guarantee

Frequently asked questions

Lock Change near you

Landlord Lock Change

Burglary Lock Repair

UPVC Door Lock Repair

Ready to get this sorted — properly?

Lock Change — Insurance-Compliant, Fitted Today.

Lock Change — Insurance-Compliant, Fitted Today.

In short

If you're reading this, you're probably feeling one of these

How LockSafe handles lock change

Here's exactly what you get when you book lock change through LockSafe

Insurance-approved BS3621 locks, every time

Cylinder, mortice, or multi-point — diagnosed before quoting

Old locks removed and disposed of

Same-day fitting across most UK postcodes

Fixed price for the lock and the labour

How it works

Post your job in 60 seconds

Get upfront quotes from verified locksmiths

Track arrival, pay only when the job is done

LockSafe vs the typical UK locksmith

The LockSafe anti-stitch-up guarantee

Frequently asked questions

Lock Change near you

Other LockSafe services you might need

Landlord Lock Change

Burglary Lock Repair

UPVC Door Lock Repair

Ready to get this sorted — properly?