Euro Cylinder Locks – Standard, Thumb Turn & High-Security Anti-Snap Cylinders
Euro cylinder locks — also known as lock barrels or door barrels — are the most common lock type fitted to uPVC, composite and wooden doors across the UK. Whether you need a replacement euro cylinder for your front door or you are upgrading to a high security anti-snap cylinder, our range covers every door type and security level.
We stock standard euro profile cylinder locks, TS007 3-Star anti-snap cylinders, thumb turn options and keyed alike sets from trusted brands including Avocet ABS and Yale. Every cylinder is available in multiple sizes and finishes, with fast UK delivery on all orders.
Anti-Snap Euro Cylinders
If your door has a standard euro cylinder without anti-snap protection, it may be vulnerable to lock snapping — one of the most common burglary techniques in the UK. Anti-snap euro cylinders are designed with a sacrificial cut line that breaks away under attack while keeping the main locking mechanism secure.
Our anti-snap cylinders are independently tested to TS007 3-Star and Sold Secure Diamond standards, providing maximum resistance against snapping, bumping, drilling and picking. The Avocet ABS range features patented Snap Secure technology with an active cam that locks the cylinder after an attack, creating a total barrier to entry. The Yale Platinum range offers 3-Star kitemarked protection with anti-bump, anti-pick and anti-drill features as standard.
Avocet ABS Euro Cylinders The ABS range is one of the most trusted high security euro cylinders available in the UK. Every ABS cylinder is British Kitemarked to TS007 3-Star standard and features 8+1 magnetic pins for superior pick resistance. Available in key both sides, thumb turn and keyed alike configurations. Shop Avocet ABS euro cylinders
Yale Platinum Euro Cylinders Yale is one of the most recognised lock brands in the UK. The Platinum series carries TS007 3-Star certification with anti-snap, anti-bump and anti-drill protection built in. Available in key both sides and thumb turn options with a unique dimple key for added security. Shop Yale euro cylinders
Choose Your Euro Cylinder Style
Double Euro Cylinders (Key Both Sides) — The standard choice for front doors and back doors. A key is required on both sides of the door. Ideal for doors with letterboxes where you do not want the lock to be turned from inside. Shop double euro cylinders
Thumb Turn Euro Cylinders — A key on the outside and a thumb turn knob on the inside for quick exit without a key. Recommended for fire safety compliance and families with children. Shop thumb turn euro cylinders
Half Euro Cylinders — Key access from one side only. Commonly used for garages, sheds, window locks and utility doors where single-sided access is sufficient. Shop half euro cylinders
Keyed Alike Euro Cylinders — Multiple cylinders operated by the same key. Perfect for properties with several external doors where you want the convenience of carrying one key for every lock. Shop keyed alike sets
How to Measure a Euro Cylinder
Getting the right size euro cylinder is essential for a proper fit. To measure your existing lock barrel:
1. Remove the cylinder from your door by undoing the single fixing screw on the edge of the door. 2. Measure from the centre of the screw hole to one end — this is your internal measurement (A). 3. Measure from the centre of the screw hole to the other end — this is your external measurement (B). 4. Your cylinder size is expressed as A/B, for example 40/50 (90mm overall).
If you are unsure, our full guide on how to measure a euro cylinder lock walks you through the process step by step with images. You can also contact us and we will help you find the right size.
Remove the cylinder (undo the retaining screw in the door edge, turn the key slightly and slide it out), then measure from the centre of the cam/fixing hole to each end. You'll get two figures, for example 40/50, sold in 5mm increments. Measure each side separately — cylinders are often offset, not symmetrical.
TS007 3-Star is the highest British Kitemark rating for euro cylinders, independently tested against snapping, bumping, drilling, picking and plug extraction. A 3-star cylinder gives full protection on its own; alternatively a 1-star cylinder paired with 2-star security handles achieves the same 3-star total.
The euro profile shape is standard, so any euro cylinder fits any euro multipoint lock — but lengths vary widely. The correct size sits flush or protrudes no more than 3mm past the handle: a cylinder sticking out further is much easier to snap, even if it's anti-snap rated.
Key both sides prevents anyone unlocking the door by reaching through a letterbox or broken glass. A thumb turn lets you escape quickly without hunting for keys — often preferred for fire safety and rental properties. If the cylinder sits close to glazing or a letterbox, key both sides is generally the safer pick.
Avocet ABS and Yale lead the UK market. The Avocet ABS is TS007 3-Star and Sold Secure Diamond with patented snap-secure technology — our best seller — and as an Avocet Elite Centre we cut ABS keys on site with same-day dispatch. Yale Platinum cylinders offer 3-star protection with a dimple key system.
Yes — the euro profile is universal, so a replacement cylinder of the correct length works with any euro-profile multipoint mechanism, whatever the door brand. You only need the right measurement and your preferred type (key both sides, thumb turn or half cylinder).
