Emergency Lockout
"Snapped key in my UPVC door at 11pm. Engineer arrived in 25 minutes, opened the door without damage and fitted an anti-snap cylinder. Fair price, no fuss."
Sarah J. — Slough, SL1
About us
A locksmith you'd actually recommend
First Line Locksmiths was founded in 2014 on a single principle: fix the lock, not the customer's wallet. A decade later, we're the trusted emergency and commercial locksmith for thousands of West London, Berkshire and Buckinghamshire homes and businesses.
Standards that don't bend
Every engineer carries a DBS check and at least three years of supervised on-the-tools training before they attend a job alone. Every van is stocked to handle 95% of UK door and window hardware on a first visit. Every quote is fixed on the phone — we don't change the number when we arrive.
We work to British Standards BS3621, BS8621 and TS007 for residential, and EN 1125, EN 179 and EN 12209 for commercial. Non-destructive entry is always the default — drilling is the last resort, and it only happens after we've told you and you've agreed.
24/7
Emergency response
100%
DBS-checked engineers
12 mo
Parts & labour guarantee
400+
5-star customer reviews
24/7 Emergency
DBS Checked
Fully Insured
No Call Centre
Local Independent
Card Payments
Fixed Prices
No Hidden Fees
Our values
Four non-negotiables we built the business on — and the reason customers send their family and neighbours to us.
Non-destructive entry first
95%+ of our lockouts open without any damage to door, frame or cylinder. Drilling is a last resort and only with your consent.
Insurance-approved hardware
BS3621 mortice locks and TS007 3-star anti-snap euro cylinders are our default fit — accepted by every major UK home insurer.
DBS-checked, salaried engineers
We don't use subcontractors. Every engineer is on our payroll, in branded uniform, and DBS-checked annually.
Fully stocked vans
Our vans carry the parts for 95% of UK door and window hardware on a first visit — no '£40 trip charge to fetch a part'.
Our story, year by year
2014
Founded in West London
First Line Locksmiths opens for trade as a single-engineer mobile locksmith covering Hillingdon and Hounslow, with a single promise: fixed prices, non-destructive entry, no call-out tricks.
2016
Expansion into Berkshire
Demand from Slough, Maidenhead and Reading households pushes us to add a second van and a dedicated UPVC repair specialist.
2018
Commercial & landlord division
We become a contracted partner to lettings agents and facilities managers across Heathrow, Uxbridge and Reading — SLA-backed call-outs, master-keyed suites and post-tenancy lock swaps.
2020
Four-van 24/7 operation
Four engineers, full anti-snap and TS007 3-star stock, average 20–40 minute attendance across our entire coverage zone.
Today
400+ verified 5-star reviews
DBS-checked, fully insured, and trusted by thousands of homes, landlords and businesses across West London, Berkshire, Buckinghamshire and Oxfordshire.
Where we work
Our four-van team is dispatched from depots in West London and Berkshire, which gives us realistic 20–40 minute attendance across our whole coverage zone — not a marketing promise we can't keep.
- West London — Hillingdon, Hounslow, Ealing, Harrow, Brent
- Berkshire — Slough, Reading, Maidenhead, Windsor, Bracknell
- Buckinghamshire — Uxbridge, Iver, Gerrards Cross, Beaconsfield
- Oxfordshire — Oxford and surrounding villages
- Heathrow — all terminals and the airport perimeter
Talk to the engineer who will attend
No call centres, no lead-brokers. When you call First Line Locksmiths you speak directly to the on-call engineer.
07440 766267- Fixed price agreed before we set off
- 12-month parts & labour guarantee
- Itemised invoice for insurance claims
Reviews
4.9/5 from 412 customers
Verified · Google
Commercial Locksmith
"Used these for our office on the M4 corridor. Master-key suite installed overnight — zero disruption to staff. Will absolutely use again."
Mark T. — Reading, RG1
Burglary Repair
"After a burglary attempt they came within the hour, boarded the door, and replaced the lock with paperwork for my insurance. Genuine professionals."
Priya R. — Uxbridge, UB8
Frequently asked
First Line Locksmiths was founded in 2014 as an independent, family-run locksmith covering West London. We have grown to four vans and now cover Berkshire, Buckinghamshire and Oxfordshire 24/7.
Get Emergency Help
Speak to a locksmith in under 60 seconds
Fixed price agreed on the phone before we set off. Average attendance 20–40 minutes.