The types of locks you need depend on your door material, your insurer's wording, and the age of your South London property. Victorian terraces in Norbury and Thornton Heath use entirely different types of locks than 1960s council builds in Croydon or modern composite builds across the CR and SM postcode belt. Fit the wrong types of locks and your home insurer may decline a burglary claim.
The 14 types of locks below are the most common in residential and commercial properties across SW, SE, CR, SM and BR postcodes. Each page covers what the lock does, which doors it suits, its BS3621 or TS007 security rating, and typical fitting costs. Not sure which of these types of locks applies to your door? Call us for a free security check — we'll tell you exactly what's fitted and whether it satisfies your insurer.
For door-specific options, see our guides on door locks by material and high-security upgrades. Smart types of locks are covered separately.
Insurance Compliance
Does your lock satisfy your insurer?
uPVC door
TS007 3-star cylinder — insurer approved
Wooden door
BS3621 5-lever mortice — insurer approved
Composite door
Multi-point + anti-snap — check your policy
Standard euro cylinder
No TS007/BS3621 rating — claim likely declined
Browse all common types of locks fitted across South London. Select any lock for full details, security ratings, door compatibility, and fitting costs.
No competitor in South London has written this table. Match your door type to the right lock — and check the insurance column before you buy.
| Lock Type | Door Type | Security Rating | Insurance Approved | Typical Cost (fitted) |
|---|---|---|---|---|
| 5 Lever Mortice Lock | Wooden front/back doors | BS3621 ✓ | ✓ Yes | £120 – £180 |
| Anti-Snap Euro Cylinder | uPVC & composite doors | TS007 3-Star ✓ | ✓ Yes | from £200 |
| Mortice Sash Lock | Wooden front doors | BS3621 (5-lever) | ✓ If 5-lever | £130 – £190 |
| Night Latch (BS) | Wooden front doors | BS3621 ✓ | ✓ BS version | £100 – £160 |
| Yale Lock (basic) | Wooden front doors | No rating | ✗ Alone | £75 – £110 |
| 3 Lever Mortice Lock | Internal doors only | No BS rating | ✗ Front door | £85 – £130 |
| Standard Euro Cylinder | uPVC & composite doors | Snap risk | ✗ Upgrade needed | £75 – £69 |
Prices are typical South London fitted costs including parts and labour. Exact quote provided on arrival — no hidden fees.
Every lock we supply is rated BS3621 or TS007. We won't fit one that doesn't satisfy your insurer. No exceptions.
We cover all SW, SE, CR, SM and BR postcodes. Emergency or planned — same fast response.
Every job includes a free check of all entry points — not just the one we're working on. We'll tell you exactly what's at risk.
Price agreed before work starts. No surprises on the invoice. No call-out charge regardless of time or day.
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Full coverage: all SW, SE, CR, SM and BR postcodes — 24 hours a day, 7 days a week.
Call us and describe your door — we'll tell you exactly which lock meets your insurer's requirements. Free advice, no obligation.
Family-run, DBS-checked locksmiths covering South London since 2015. Lockouts, lock changes, uPVC door repairs, smart locks, commercial & insurance work — clear pricing before any job begins.
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