UK Buyers Guide to Smart Home Locks

What is a Smart Lock

A smart lock is an electronic lock that replaces or upgrades your existing door lock. Instead of a traditional key, you can unlock it using:

• A smartphone app
• A PIN code keypad
• Fingerprint recognition
• Voice assistants such as Alexa or Google Assistant

Note: Many smart locks still include a backup key option for emergencies.

Are Smart Locks Safe

Modern smart locks use strong encryption and multiple safety features, but consider the following:

• Hacking risk – as with any connected device, choose a lock with robust encryption and two-factor authentication.
• Battery failure – pick a model with low battery alerts and an emergency power option.
• Door compatibility – security depends on the door and frame. Check the lock meets UK standards such as BS3621, which insurers often require.

A quality smart lock can be as safe as a traditional lock, and often safer thanks to features like tamper alarms and auto lock functions.

Benefits of Smart Locks

• Keyless entry – no more searching for lost keys.
• Remote access – lock or unlock from anywhere using your phone.
• Guest access – share digital keys or PINs with family, friends, or tradespeople.
• Activity tracking – see who entered and when, useful for families and rentals.
• Smart home integration – many models work with Alexa, Google Home, or Apple HomeKit.
  
  

Downsides of Smart Locks

• Price – usually higher than a standard lock.
• Battery changes – expect to replace \ charge batteries every 3 to 12 months.
• Technology reliance – if  e.g. Wi-Fi fails, you will need a backup method.
• Compatibility – not all locks fit every door type, especially some uPVC and composite doors.
  
  

Types of Smart Locks

• Keypad locks – open with a PIN code.
• App controlled locks – use Bluetooth or Wi-Fi via a smartphone.
• Fingerprint locks – unlock with biometrics.
• Retrofit locks – fit over your existing lock so you can keep a physical key as backup.
  
  

What to Consider Before Buying a Smart Lock

• Door type – uPVC, composite, and wooden doors may need different fittings.
• Insurance compliance – look for locks that meet UK standards such as BS3621.
• Connectivity – Bluetooth for close-range control, Wi-Fi for remote access, Zigbee / Z-Wave for hub integration.
• Backup options – key override, keypad entry, or an emergency charging port.
• Integration – check compatibility with Alexa, Google Home, or Apple HomeKit.
• Auto locking – set the door to lock itself after a chosen time.
• Price – budget £100 to £300 for most reliable UK models.
  
  

Best Smart Lock Brands in the UK

• Yale – a wide range suited to uPVC and wooden doors.
• Nuki – retrofit options that work with existing cylinders.
• August – app friendly and straightforward to install.
• Ultion Smart – high-security options for composite doors.
• Danalock – compact design with multiple connection options.
  
  

Do Smart Locks Work with uPVC Doors

Yes, but choose carefully. Many UK homes have uPVC or composite doors with multi-point locking systems. Not all smart locks support these. Brands such as Yale and Ultion offer models designed for these door types. Check compatibility before buying.

Smart Lock Installation: DIY or Professional

• DIY installation – retrofit models such as Nuki are designed for easy fitting.
• Professional installation – replacing a euro cylinder or fitting to a multi-point lock often needs a locksmith to ensure security and insurance compliance.
  
  

How Much Do Smart Locks Cost in the UK

• Entry level – from about £100.
• Mid range – typically £150 to £250 with app control and keypad.
• High end – £250 to £350+ with advanced security and integrations.

Add installation costs if you use a locksmith.

Are Smart Locks Worth It

If you value convenience, modern security features, and smart home integration, a smart lock can be a great upgrade. They are particularly useful for landlords, short-let hosts, and busy households.

If lowest cost security is your only goal, a high quality traditional lock is probably a better. For many homes, features such as remote access, guest codes, and keyless entry make smart locks an option worth considering.