Lock Change in Barnet — Same Day
Cylinder swap or full lock change, £61 per lock for labour on standard locks, parts extra if you need new hardware. Price confirmed on the phone before anyone drives out. No call-out fee.
- £61 per lock — Labour only — standard cylinder or pin tumbler lock
- Same-day service — Open 24 hours across Barnet and North London
- 1-year warranty — On all new lock installations
Problems we solve every day
- Lost keys — need locks changed before someone uses them
- Moved into a new property and don't know who has copies of the keys
- Relationship breakdown and need a lock change quickly
- Worn or stiff cylinder that won't turn smoothly
- Upgrade from a basic lock to a British Standard security lock
- Landlord requiring lock change between tenancies
- Current lock doesn't meet home insurance requirements
- Key broken in lock and the cylinder needs replacing
What you get
- Price confirmed on the phone before John leaves
- Old lock removed and new one fitted — no half-done jobs
- New keys cut on site where needed
- 1-year workmanship warranty on all new lock installations
- Advice on the right lock type for your door and insurance requirements
Flat prices, agreed before we start
| Service | Price | Notes |
|---|---|---|
| Lock change (labour only) | £61 per lock | Standard cylinder or pin tumbler, any door type |
| New cylinder supplied and fitted | £56 – £124 | Depending on brand, pin count, and security rating (1-year warranty) |
| High-security lock upgrade | £225 – £600 | British Standard (1-star to 3-star), labour plus lock — see high security page for full list |
| Key cutting | £17 – £60 per key | Depending on key type and security level |
Prices confirmed on the phone before any work starts. No call-out fee.
What people ask before they book
How long does a lock change take?
Most standard cylinder swaps take 20–40 minutes. A full mortice lock replacement takes longer — usually 45–90 minutes depending on the door and lock type.
Do I need to replace the whole lock or just the cylinder?
In most cases, just the cylinder — especially on euro-profile doors and most uPVC doors. If the lock body itself is damaged or you're upgrading security, a full lock change makes more sense. John will tell you which is needed before starting.
Will the new lock meet my home insurance requirements?
Most insurers require at least a 5-lever mortice deadlock (BS 3621) or a BS-approved cylinder on external doors. If you're unsure what your policy requires, check the policy documents or call your insurer first — we can then fit whatever meets the spec.
Can you change the locks on a uPVC door?
Yes. uPVC doors typically use a euro-profile cylinder, which is usually a straightforward swap. If the mechanism itself is faulty, see the uPVC door repair page.
“Moved into a new flat in East Barnet and wanted all the locks changed before we unpacked. John was there the same afternoon, changed two cylinders, and left us three sets of keys. Exactly what we needed.”
“Old Yale on the front door was so worn the key had started catching. New cylinder fitted in under half an hour and the difference is night and day.”
Locked out? Need a locksmith now?
Call now and speak to John directly — no call centre, no script. You'll know the price before he's on his way.