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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. 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. 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. 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. 4

    Same-day fitting across most UK postcodes

    Posted by 2pm? Most lock changes are fitted, tested, and signed off the same day.

  5. 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. 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. 2

    Get upfront quotes from verified locksmiths

    DBS-checked, insured locksmiths quote you a fixed price — agreed before any work starts.

  3. 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 UKTypical 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

Real customers, real outcomes

New tenants moving in and I needed BS3621 fitted before handover. Posted at 9am, fitted by 1pm, full receipt for the letting agent. Faff-free.
Daniel T. · Leeds

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.

Other LockSafe services you might need

Landlord Lock Change

Tenant changeover? Section 21? Get verified, BS3621 lock changes with full paperwork for your portfolio.

From £75Read more

Burglary Lock Repair

After a break-in, get your home secure tonight. Verified locksmiths, insurance-friendly paper trail.

From £90Read more

UPVC Door Lock Repair

UPVC door not locking properly? Multi-point lock failures repaired by verified specialists with upfront pricing.

From £80Read more

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.

CallGet fixed quote