Smart locks are becoming one of the most popular upgrades for UK homes, flats and businesses - but before buying one, the big question is:
👉 “Will a smart lock actually fit my door?”
Because unlike the US, UK doors come with a wide variety of locking mechanisms, shapes, thicknesses, and multipoint configurations. Many online smart locks (especially US imports) simply do not fit British doors.
This guide removes the guesswork.
Below, you’ll learn exactly which smart locks fit:
- uPVC doors
- Composite doors
- Wooden doors
- Aluminium doors
- Double French doors
- Apartment doors
- Business premises
- HMOs & rental properties
…and which locks won’t work.
Let’s break it all down.
🔍 First: Identify Your Door Type
Before selecting a smart lock, determine what kind of door you have.
1. uPVC Door (most UK homes)
Common features:
- Multipoint locking (handle lift to lock)
- Euro cylinder
- Usually white plastic frame
2. Composite Door
Common features:
- Heavy, solid construction
- Multipoint mechanism
- Euro cylinder
- Wood/foam core with GRP skin
3. Wooden Door
Common features:
- Single-point mortice lock or night latch
- Varied thicknesses
- Common on older houses
4. Aluminium Door
Common features:
- Often used for shops, apartments, offices
- Euro cylinder or specialist commercial locks
5. Internal Room Doors / Bedroom Doors
Common features:
- Simple tubular latch
- No multipoint mechanism
Knowing this is step 1 - now we look at smart lock compatibility.
Smart Locks for uPVC & Composite Doors
Most UK uPVC & composite doors use:
✔ Multipoint lock system
✔ Euro cylinder
✔ Lift-to-lock handle
This requires a smart lock that can operate the multipoint mechanism, not one that replaces the cylinder only.
The WME DL1 – Compatible With Most uPVC & Composite Doors
The DL1 is designed for UK-style doors using a lever handle and euro cylinder.
It is compatible with:
✔ Multipoint locking
✔ 44–90mm door thickness
✔ Standard backset sizes
✔ Both inward & outward opening doors
The WME DL2 – For Smart Wi-Fi/Remote Access
DL2 includes all DL1 features with Wi-Fi for app control.
Also fits:
✔ uPVC
✔ Composite
✔ Aluminium doors with euro cylinders
Smart Locks for Wooden Doors
Wooden doors vary significantly, so compatibility depends on the following:
Does your door use:
A Euro Cylinder? → ✔ DL1 & DL2 compatible
A Mortice Sashlock? → ❌ Many smart locks incompatible
A Night Latch (Yale Lock)? → ✔ Consider rim-cylinder smart locks
Best Setup for Wooden Doors:
Fit a new euro sashlock to replace an old mortice lock.
This lets you install DL1/DL2 easily.
Smart Locks for Aluminium and Commercial Doors
Aluminium frames are common in:
- Shops
- Offices
- Apartment blocks
- Commercial units
Most of these use:
✔ Euro cylinders
✔ Commercial latch backsets
✔ Narrow stile mortice locks
The DL1 and DL2 work as long as a euro cylinder is present.
For commercial setups:
Add CDVI magnetic locks or access control readers
These provide extra holding force and integrate with door entry systems.
Smart Locks for Internal Doors (Bedrooms, Offices, HMOs)
Internal doors usually have:
✔ Simple tubular latch
✔ No multipoint
✔ No euro cylinder
Meaning many smart locks won’t fit unless a euro-profile lock case is added.
Best option:
Install a new euro-lock case → then DL1 or DL2 will fit perfectly.
Ideal for:
- HMOs
- Student accommodation
- Office rooms
- Staff areas
- Airbnb rooms
- Private household bedrooms
Smart Locks for Double Doors / French Doors
French doors come in two types:
1. Master Door (active)
Has handle + cylinder →
✔ Smart lock can be installed.
2. Slave Door (passive)
Bolted top/bottom →
❌ No smart lock needed.
Important:
If the master door has a euro cylinder and multipoint locking, DL1 and DL2 are compatible.
Read more on locks for French Doors here.
Smart Locks That Won’t Fit UK Doors (and why)
Avoid locks designed for US-style deadbolts.
Examples include:
- August Smart Lock
- Wyze Lock
- Level Lock
- Many Amazon imports
These are made for deadbolts, not euro cylinders.
If the product page only mentions “deadbolt”, it won’t fit a UK home.
How to Check If Your Door Is Compatible (3-Step Checklist)
Step 1: Does your door have a euro cylinder?
If yes → DL1/DL2 fits
If no → upgrade the lock case
Step 2: Door thickness (44–90mm)?
Both DL1 and DL2 support common UK sizes.
Step 3: Multipoint or single-point?
DL1/DL2 support both (multipoint preferred).
Need help?
Upload photos and WME can advise compatibility.
Why DL1 & DL2 Are Designed for UK Door Compatibility
Both WME smart locks were built specifically for UK homes — unlike many US imports.
They offer:
✔ Euro-cylinder support
✔ Multipoint compatibility
✔ Anti-tamper alarm
✔ Auto-lock on closing
✔ Fingerprint/PIN/card/key entry
✔ Simple installation
✔ UK door-thickness support
Meaning you avoid the fitment headaches that come with other brands.
Will a Smart Lock Fit Your Door?
In most cases — YES.
With the right lock case and the right smart lock, nearly every UK door type can be upgraded to keyless entry.
Best for uPVC/Composite:
👉 WME DL1 / DL2
Best for Wooden Doors:
👉 DL1/DL2 + euro lock case
Best for Commercial Doors:
👉 DL2 + CDVI magnetic lock
Best for Internal Rooms/HMOs:
👉 DL1/DL2 with latch conversion
If you're unsure, WME can confirm compatibility by checking a photo of your door.
