A smart door lock lets you unlock your front door with your phone, a keypad PIN, or a fingerprint — and lock it remotely if you forget on the way out. For UK homes, there are some important compatibility considerations that don’t apply in other markets: most UK insurance policies require a BS3621 deadbolt, and UK door setups (particularly multipoint locking systems common in uPVC doors) are different from the single-deadbolt setups most smart locks are designed around.
This guide covers the best smart locks genuinely suited to UK homes in 2026, including options that work with multipoint locking doors.
Our Top Picks
| Lock | Best For | Price | BS3621? |
|---|---|---|---|
| Yale Linus Smart Lock | Best overall for UK doors | £180–£220 | Yes |
| Nuki Smart Lock 4.0 Pro | Best for renters, no drilling | £170–£200 | Keeps existing |
| Ultion Smart Lock | Best security credentials | £250–£300 | Yes (TS007 3★) |
| Yale Keyless Connected | Best keypad-only option | £220–£260 | Yes |
| Danalock V3 | Best for Home Assistant | £140–£160 | Keeps existing |
Critical UK Compatibility Note
BS3621 and home insurance
Most UK home insurance policies require a BS3621-rated deadlock on external doors. If you replace your existing lock with a smart lock that doesn’t meet this standard, you may inadvertently invalidate your insurance. Always check your policy before replacing a deadlock, and ensure any smart lock you fit either carries BS3621 certification or works alongside your existing deadlock (as retrofit locks like the Nuki do).
uPVC multipoint locking doors
Many UK homes — particularly those built or renovated from the 1990s onwards — have uPVC doors with multipoint locking systems. These lock at three or more points around the door frame when you lift the handle, rather than using a single deadbolt. Most smart locks are designed for single-deadbolt doors and are not compatible with multipoint systems without modification. The Yale Linus and Yale Keyless Connected are among the few smart locks specifically designed for the UK market that address this. If you have a uPVC door, confirm compatibility before buying.
Yale Linus Smart Lock — Best Overall for UK Doors
The Yale Linus is designed specifically for UK homes and is one of the few smart locks that replaces the thumb turn on a standard Yale-type deadlock — leaving the keyhole intact on the outside so you retain a physical key backup. It’s BS3621 compliant, fits the majority of UK door profiles, and comes with a gateway module (included) for remote access via the Yale Access app.
Auto-lock, access codes for guests, and a detailed access log are all available. It integrates with Alexa, Google Home, and Apple HomeKit, and Yale’s own ecosystem includes alarms and cameras you can add over time. Installation is straightforward for standard deadlocks and takes under 30 minutes.
Pros
- Designed for UK doors — BS3621 compliant
- Physical key backup retained
- Works with Alexa, Google Home, and HomeKit
- Detailed access log
- Auto-lock and guest codes
Cons
- Not suitable for uPVC multipoint locks without additional hardware
- Gateway module required for remote access (included but adds to the setup)
- More expensive than some alternatives
Price: £180–£220. Check on Amazon UK.
Nuki Smart Lock 4.0 Pro — Best for Renters
The Nuki is a retrofit lock that attaches to the inside of your existing door lock over the thumb turn — no drilling, no replacing hardware, and your physical key still works normally from the outside. This makes it ideal for renters who can’t make permanent modifications, and also means your existing lock (and its BS3621 certification) remains in place.
The Nuki 4.0 Pro has built-in Wi-Fi and Matter support, meaning it connects directly to your home network without a separate bridge. It works with Alexa, Google Home, Apple HomeKit, and Home Assistant. Auto-lock, access codes, and detailed access logs are all included, and the keypad accessory (sold separately, around £50) adds PIN code entry.
Pros
- No drilling — fits over existing thumb turn
- Your existing BS3621 lock stays in place
- Built-in Wi-Fi and Matter — no bridge needed
- Works with all major smart home platforms
- Ideal for renters
Cons
- Compatibility depends on your existing lock profile — check Nuki’s compatibility tool
- Keypad sold separately
- Battery powered — needs replacing periodically
Price: £170–£200. Check on Amazon UK.
Ultion Smart Lock — Best Security Credentials
Ultion is a British lock manufacturer known for making some of the most secure cylinder locks available. Their smart lock carries TS007 3-star certification — the highest security rating for euro cylinder locks in the UK — which most smart locks on the market don’t come close to. If security is your primary motivation rather than convenience, this is the lock to consider.
The Ultion Smart integrates with the Ultion app, supports keypad and key access, and connects via a bridge to Alexa and Google Home. It’s pricier than the competition and the smart home ecosystem integration is less polished than Yale or Nuki, but the physical security credentials are unmatched in this category.
Pros
- TS007 3-star — highest UK security certification
- British manufacturer with strong security heritage
- Keypad and key access
- Works with Alexa and Google Home
Cons
- Expensive
- Smart home integration less polished than Yale or Nuki
- Less widely available
Price: £250–£300. Available direct from Ultion and selected retailers.
What to Look for in a UK Smart Lock
Check your door type first
Before buying any smart lock, identify your door type: timber door with a single Yale-type deadlock, uPVC with multipoint locking, or composite door. Most smart locks work with timber doors and single deadbolts. For uPVC and composite doors, your options are more limited — Yale’s UK-specific range and Nuki’s retrofit approach are the safest bets.
Always retain a physical key backup
Smart locks can fail — dead batteries, app outages, connectivity issues. Any smart lock you install should either retain physical key access or be supplemented with a keysafe nearby. Never install a smart lock that leaves you with no mechanical fallback.
Consider battery life
Most smart locks are battery powered. Battery life ranges from three months to over a year depending on usage and the lock. Locks should warn you when the battery is low via the app — confirm this feature is present before buying, and check what type of batteries the lock uses (standard AA/AAA is preferable to proprietary packs).
Our Recommendation
For most UK homeowners, the Yale Linus Smart Lock is the best all-round choice — it’s designed for UK doors, maintains BS3621 compliance, and has the broadest smart home integration. For renters or anyone who wants a zero-modification installation, the Nuki 4.0 Pro is the standout option — matter support, no drilling, and your existing lock stays in place.