Best Smart Locks 2026 UK: Keypad, Fingerprint & App-Controlled

The best smart lock for a UK front door is the one that fits its cylinder, handle and locking routine—not the one with the longest list of app features. A retrofit motor may leave your existing key and exterior hardware in place. A replacement handle-and-cylinder system can give you a keypad and fingerprint reader at the door, but fitting and insurance questions become more important. Before choosing a model, identify your door hardware and decide how you would get in if the phone or batteries failed.

For a compatible euro-cylinder door where fingerprint and PIN entry matter, start with the SwitchBot Lock Ultra Touch Combo. Its bundle combines a retrofit motor, outdoor keypad and hub. Ultion Nuki is a more involved UK-door lock-and-cylinder package with built-in Wi-Fi; Tedee GO is the simpler app-first retrofit; and Aqara U600 replaces compatible handles and cylinder parts around an existing multipoint mechanism for households that want Apple Home Key. None is a universal fit.

Our top picks

In this guide

• Smart locks compared
• The four smart locks in detail
• Check your UK door before ordering
• Choose how people will get in
• Remote access, hubs and power
• Security, insurance and installation
• How we chose
• The bottom line
• Frequently Asked Questions

Smart locks compared

Lock	Installation	Ways in	Connection	Check first
SwitchBot Lock Ultra Touch Combo	Retrofit over compatible cylinder	Fingerprint, PIN, app, existing key	Hub Mini Matter included	Door-frame clearance and handle routine
Ultion Nuki 2025, chrome under 55mm	Replace cylinder and interior hardware; outside handle may stay	App, existing key; optional keypad	Built-in Wi-Fi	Door thickness and fixing centres
Tedee GO, silver	Retrofit over compatible inside key	App, existing key; optional keypad	Bluetooth; bridge for remote access	Double-clutch cylinder and protrusion
Aqara U600	Replace compatible handles/cylinder; retain multipoint strip	Apple Home Key, fingerprint, PIN, key	Matter over Thread; controller for ecosystems	Door geometry, fitting and insurer terms

The key comparison is not “smart versus traditional”. It is which part of the existing door changes. The two over-key devices leave the exterior cylinder in place if your hardware is suitable. Ultion Nuki and Aqara involve changing handle and cylinder components and demand closer measurements. Fingerprint and keypad access are useful only if the specific package includes an exterior reader; a phone-only lock cannot give a visitor a PIN without an added accessory.

The four smart locks in detail

SwitchBot Lock Ultra Touch Combo: Fingerprint and PIN in a retrofit package

The exact SwitchBot package pairs Lock Ultra with Keypad Touch and Hub Mini Matter. That is a sensible combination if the household wants a fingerprint or PIN at the door, an app for administration and a hub for connected features, without replacing the outside handle. The interior motor turns an existing compatible lock. SwitchBot also offers a manual turn on the unit, while the existing mechanical key can remain a fallback where the cylinder supports outside operation with an inside key.

Watch out for: A motor cannot lift a multipoint handle for you. On a door that requires a lift before the key turns, someone still has to lift it. Check the cylinder style, handle travel, clearance to the frame and whether an inserted interior key blocks an outside key. The included hub does not remove those mechanical limits. See the maker’s model details.

Ultion Nuki Smart Lock 2025 (chrome, under 55mm): A UK-oriented lock-and-cylinder package

Ultion Nuki is the choice here for someone willing to change the cylinder and interior hardware rather than hang a motor on an existing key. The 2025 model has built-in Wi-Fi for remote control and retains a physical key. The existing outside handle can stay where compatible. Ultion specifies particular handle-fixing distances and a 92mm handle-to-keyhole centre measurement, so it is more UK-door-specific than a generic deadbolt product.

Watch out for: This linked chrome variant is explicitly for a door under 55mm thick. Do not assume another Ultion Nuki finish or thickness option is interchangeable. Measure the handle centres and thickness first, confirm the supplied parts for your exact door, and allow for a locksmith if the hardware does not match. An exterior fingerprint keypad is an optional extra, not part of this basic lock package. See the maker’s model details.

Tedee GO (silver): A simpler phone-first retrofit

Tedee GO sits over a key on a suitable euro-profile cylinder, leaving the existing outside furniture in place. It is a neat route when app access is the main goal and you do not need a permanent exterior keypad from day one. Bluetooth covers nearby phone control; Tedee Bridge is the additional route to remote access and some wider integrations. An optional Tedee keypad can add codes later.

Watch out for: The cylinder needs the double-clutch or emergency function so an outside key can work while a key is fitted inside. That is not guaranteed by “euro cylinder” alone. Tedee also sets fitting and protrusion requirements: check its cylinder guide before buying. This linked product is the silver GO, not GO2 or a bridge bundle, so do not assume another version’s accessories are in the box. See the maker’s model details.

Aqara Smart Lock U600: An Apple Home Key option for compatible multipoint doors

Aqara U600 replaces compatible handle and cylinder parts while retaining the existing multipoint lock body. Its exterior reader offers fingerprint and PIN entry alongside mechanical keys. Apple Home Key makes it attractive if family members already use compatible iPhones or Apple Watches. Aqara also lists Matter over Thread for broader ecosystems. After authentication, the user pushes the handle to open the existing mechanism; on lift-to-lock doors, the handle still needs lifting to engage the multipoint bolts. Its fit check is therefore a full handle-and-cylinder measurement, not a promise that the motor handles the door’s mechanical sequence.

Watch out for: Aqara states 40–80mm door thickness but also publishes other geometry requirements; thickness alone does not establish fit. Apple Home Key needs an Apple home hub, and a Matter ecosystem needs an appropriate Thread-enabled controller. Aqara explicitly tells buyers to check insurer requirements before replacing the cylinder. Do that before fitting, not after. See the maker’s model details.

Check your UK door before ordering

Identify the cylinder and locking sequence

First note whether the door has a euro-profile cylinder, a nightlatch, a rim lock or a different arrangement. Then close the door normally and observe what you do before turning the key. Many UK uPVC and composite doors need their handle lifted to engage the multipoint mechanism. A retrofit motor that rotates the key does not necessarily perform that lift. If you cannot identify the mechanism, ask a competent locksmith to check it before buying a lock.

Measure more than door thickness

Photograph both faces of the door, the cylinder and the handle. Record door thickness, handle fixing-centre spacing, handle-to-keyhole centre distance, cylinder projection and distance from the interior cylinder to the frame. Ultion publishes fixing and centre measurements for its system; Aqara publishes a U600 compatibility diagram. Use those exact guides, not a generic “fits UK doors” badge. A handle-and-cylinder change can involve new exterior furniture and a different cylinder length.

• Retrofit: check that the motor can grip the key or thumbturn, that the door clears the unit, and that an outside key still works as intended.
• Replacement: check backset, handle centres, door thickness and existing lock case against the maker’s drawing.
• Flat or shared entrance: confirm the lease, landlord and fire-escape requirements before changing entrance-door hardware.

Our smart-home starter guide can help plan the wider setup, but door fit comes first.

Choose how people will get in

A phone is convenient, but not everyone uses one

App access suits a household comfortable managing permissions and batteries, but it is a weak sole plan for visitors, children or anyone arriving with a flat phone. An outdoor keypad gives a code-based route. Fingerprint entry is quick for regular users, but it should sit alongside another method for wet hands, gloves, missed reads or a damaged sensor. The SwitchBot bundle and Aqara U600 include exterior readers; the Ultion Nuki and Tedee GO picks need optional accessories for keypad or fingerprint entry.

Plan a real backup

For each shortlist model, write down the fallback before installation: spare mechanical key, interior manual control, external emergency power provision, or a second entrance. Do not assume “has a key” means it will work while a key is left in the inner side of the cylinder. That depends on the cylinder’s emergency function. Test the fallback from outside with the door open before trusting it on a closed door. If you are planning routines such as arrival-triggered lights, our geofencing guide explains what location automation can and cannot reliably infer.

Remote access, hubs and power

Nearby control is different from remote control

Bluetooth from a phone at the door is not the same as unlocking from another city. Tedee GO needs its bridge for remote access; the SwitchBot package here includes its Hub Mini Matter; Ultion Nuki 2025 has built-in Wi-Fi. Aqara’s U600 uses Matter over Thread for connected ecosystems and needs a suitable controller for those features. Confirm the exact hub and network requirements for the functions you intend to use, not just a “works with” logo. Our smart-speaker hub guide covers the wider controller question.

Expect batteries to be a maintenance task

Battery claims are maker estimates under stated conditions, not dates to put in the calendar. Traffic, cold, motor effort, wireless signal and automations all affect runtime. Enable low-battery alerts and check them periodically. For a rechargeable unit, know how you will recharge it without leaving the door unsecured; for replaceable batteries, keep the correct type available. A battery warning is not a reason to ignore a stiff mechanical lock—friction can shorten runtime and may need a locksmith.

Security, insurance and installation

Do not buy a certification by association

A smart motor mounted over an existing cylinder does not turn that cylinder into a certified high-security one. Equally, a replacement may alter the hardware on which your home-insurance conditions are based. Ask the insurer what it requires for this particular entrance door and keep the answer with your policy. Aqara itself advises that replacing the cylinder may affect coverage. Check the actual cylinder or complete lock certification for the exact parts fitted; do not transfer a security claim from a brand or another model.

Treat installation and access as safety decisions

Test the physical lock before enabling auto-lock. The door should close, latch and open smoothly; an app cannot fix misalignment or a dragging multipoint gearbox. Keep a route out from the inside that everyone in the home can use, including during a power or network outage. If the entrance is shared, a designated fire door, or subject to building-management rules, get appropriate advice before modifying it. For connected alerts, a smart lock can complement—not replace—an alarm system or video doorbell.

How we chose

We compared the buying decisions that differ in real UK homes: retrofit versus replacement, access method included in the exact package, cylinder and multipoint fit, remote-control equipment and a usable fallback. The four picks serve different door and household setups. Published manufacturer compatibility information underpins the fit advice; it is not a substitute for measuring your own door. We have not installed or endurance-tested these locks, so we do not claim measured battery life, hacking resistance or flawless auto-unlock.

Customer ratings are one filter, not proof that a lock fits your door or meets your insurer’s requirements. A fitted lock can be awkward to return: check the current seller’s terms for opened or installed hardware before ordering, particularly for models that change the door hardware.

The bottom line

Choose the SwitchBot Lock Ultra Touch Combo if your cylinder and frame suit a retrofit and you want fingerprint, PIN and phone access in one package. Choose Ultion Nuki 2025 if you prefer a lock-and-cylinder approach for a measured compatible UK door, and the exact under-55mm variant fits. Tedee GO is the lower-complexity phone-first route when you already have a suitable double-clutch cylinder. Aqara U600 is the more involved replacement for a matching multipoint door and an Apple Home Key household.

Measure and check the maker’s fit drawing before paying. If you cannot confirm the cylinder, handle sequence and mechanical fallback, keep your current lock until a locksmith can identify them. A good smart lock makes the daily routine easier without making the basic job of opening and securing the door less dependable.

Frequently Asked Questions

Will a smart lock work on a UK multipoint door?

Some do, but the handle routine matters. A retrofit motor may turn the key without lifting the handle; a replacement must match the existing door geometry. Follow the exact maker compatibility guide and get a locksmith to identify uncertain hardware.

Can I still use a key if the batteries die?

It depends on the lock and cylinder. Ultion Nuki and Aqara U600 provide mechanical-key routes. For a motor fitted over an interior key, outside-key operation requires a compatible emergency-function cylinder. Test the fallback with the door open.

Do I need a hub for remote unlocking?

That varies by product. The SwitchBot bundle here includes a hub, Ultion Nuki 2025 has built-in Wi-Fi, and Tedee GO needs a separate bridge for remote access. Aqara U600 needs the appropriate controller for its connected ecosystem features.

Which smart lock has fingerprint and PIN access in the box?

The linked SwitchBot Lock Ultra Touch Combo includes Keypad Touch; Aqara U600 has an integrated exterior fingerprint reader and keypad. The linked Ultion Nuki and Tedee GO configurations need optional accessories for those methods.

Will fitting a smart lock affect home insurance?

It may if the change replaces a required cylinder or alters the door hardware. Check your policy and ask your insurer about the exact proposed installation before fitting. A smart feature or brand name does not itself establish that the complete door meets your policy terms.

Can a renter fit a smart lock?

A removable retrofit may be possible, but permission and cylinder compatibility still matter. Check the tenancy and any building or fire-door rules, keep the original parts, and confirm the existing key and exit route still work. Do not assume a no-drill installation needs no consent.