The image shows two Avocet ABS high security euro cylinders, one in silver and one in gold finish, both with the key inserted. The cylinders are marked with the brand logo and the ABS seal.
Keyed alike Euro cylinders for front, back and patio doors, all operated using the same key.
Euro cylinder measuring guide showing how to measure side A and side B from the central fixing screw to determine the correct cylinder size for your door
High-security door cylinder with break-off front, snap secure technology, and total barrier features for enhanced protection.
Set of security keys with a keycard, labeled “SECURITY LOCKED IN... INTRUDERS LOCKED OUT,” used for high-security UPVC door locking systems.
The image shows two Avocet ABS high security euro cylinders, one in silver and one in gold finish, both with the key inserted. The cylinders are marked with the brand logo and the ABS seal.
Keyed alike Euro cylinders for front, back and patio doors, all operated using the same key.
Euro cylinder measuring guide showing how to measure side A and side B from the central fixing screw to determine the correct cylinder size for your door
High-security door cylinder with break-off front, snap secure technology, and total barrier features for enhanced protection.
Set of security keys with a keycard, labeled “SECURITY LOCKED IN... INTRUDERS LOCKED OUT,” used for high-security UPVC door locking systems.
Avocet ABS

Avocet ABS High Security Euro Cylinder - Anti Snap Lock - TS007 3 Star (Keyed Alike)Avocet ABS Euro Cylinder - Anti Snap Lock - TS007 3 Star (Keyed Alike)

4.88 (17 reviews)
£54.99 SKU: HS2345KA

Will this fit your door? See the measuring guide ↓

Colour: Chrome
Size (INT) - (EXT)
£54.99
Colour: Chrome
Size (INT) - (EXT)
Order by 2pm for same-day dispatch
Made to order: order at least 2 locks (one per door, any sizes). 3 keys shared between them. Dispatched in up to 7 working days. Can't be returned once made. Need a thumb turn on one door? Build your set
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Same-day dispatch on orders before 2pm

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CERTIFIED & POLICE PREFERRED

Black logo with a heart and arrow design on a white background

TS007 3 Star

British Standard

Logo of Solid Secure Diamond with a keyhole design and blue and orange colors.

SS312 Diamond

Sold Secure

Logo of Secured by Design with a blue and yellow color scheme.

Secured by Design

Police Preferred

Logo of BSI with a heart design in the center on a white background

British Kitemark

BSI Approved
Key benefits
  • All locks on a single key - one key opens every door
  • TS007 3-star Kitemarked anti-snap - British-tested high security
  • 3 keys supplied across all locks - however many you order
Euro cylinder measuring guide showing how to measure side A and side B from the central fixing screw to determine the correct cylinder size for your door

Not sure which size cylinder you need?

Euro cylinders are measured in two halves, separated by the central fixing screw. Take both measurements from your existing cylinder before ordering, and match them to the size listed above.

A — Internal side
Measure from the centre of the fixing screw to the outer edge of the cylinder on the side that faces inside your home. Common sizes are 30mm, 35mm, 40mm, 45mm, or 50mm.

B — External side
Measure from the centre of the fixing screw to the outer edge of the cylinder on the side that faces outside your home. Common sizes are 30mm, 35mm, 40mm, or 45mm.

Cylinders are typically described as A/B — for example, a 35/45 cylinder has 35mm on the internal side and 45mm on the external side. Get both measurements right and the cylinder will fit your door perfectly.

Still unsure? Send a photo of your existing cylinder to info@homesecureshop.co.uk and we'll match it for you — or call 0151 521 8089 to speak to our team.

Full measuring guide
Product overview

Avocet ABS keyed alike euro cylinders all work from the same key, so one key opens your front, back and side doors. Each cylinder is a TS007 3 star, British Kitemarked anti-snap ABS that retrofits in place of your old lock.

Before you order

  • Order at least 2 locks, all from this keyed alike listing. It's marked KA on the website image.
  • 3 keys are supplied between all the locks, however many you order. Need more? Add Avocet ABS additional keys (keyed alike) to your basket.
  • Delivery may take up to 7 working days, depending on the sizes ordered and whether extra keys need cutting. Contact us if you need delivery timescales.
  • Non-refundable: keyed alike and built-to-code locks are personalised, made-to-order goods.

Security features

  • Snap Secure Technology: after snapping, the cam locks against the internal locked side of the cylinder, so it can't be operated by hand
  • Anti-snap, anti-drill and anti-pick
  • TS007 3 star rating, with the British Kitemark™ stamp
  • Master Locksmith Association's Sold Secure Diamond standard

Sizes and measuring

  • Finishes: Chrome or Brass
  • Sizes: 30mm to 60mm on each side, in 5mm steps. Pick a size for each door.
  • Measurements are taken to the centre screw on this lock. See our euro cylinder measuring guide.

Please note: 30mm cylinders do not display a kitemark due to reduced numbers of key combinations. 30mm cylinders still snap off at the sacrificial point in front of the cam, so an intruder can't get into the lock case.

Only need one lock? See the standard Avocet ABS euro cylinder. Want a thumb turn on the same key? See the ABS thumb turn keyed alike.
Delivery & Returns

How much is delivery?

UK Mainland Delivery is £2.99 on all items no matter how many you order!

Northern Ireland, Scottish Highlands, Channel Islands £6.00.

We do not offer International Delivery (Ireland, France, Spain etc).

When will my order be dispatched?

Orders before 2pm (Monday to Friday) are usually dispatched same day but may take up to 24 hours.

When will I receive my item?

We ship on 2 working day courier. Fully Tracked. Tracking will be emailed on dispatch.

Special order items such as keyed alike locks will take longer to dispatch. Please refer to product description for lead times.

I haven't received my item?

Please email us your name, order number and date of purchase.

We prefer email as it allows us time to research and respond.

Returns Information

We operate a 30 day refunds and return policy.

If you change your mind you must return the product back to us within 30 days of delivery

Please include a copy of your invoice and a note stating reason for return.

Additional keys, locks keyed alike or built to code are non refundable as they are personalised made to order goods.

Any refund, which is due to a fault or other defect, will include a refund of the applicable delivery charges otherwise not.

It is the buyers responsibility to arrange the return of goods to us. We do not offer a collection service for returning items.

Items must be returned including original product packaging and accessories.

We reserve the right to refuse any returns that do not comply with this policy.

Please post returns to the following address:

Home Secure (Online)

Unit 5, Brookfield Drive

Liverpool, L9 7AJ

United Kingdom

Frequently Asked Questions

All the cylinders in your order open with the same key, so one key works your front, back and side doors.

Order at least 2 locks in the same order. 3 keys come with the set, however many locks you order. You can add extra keyed alike keys.

Yes. Pick a size for each door. You can also mix key-both-sides and thumb turn cylinders in the same set. The easiest way is our keyed alike set builder, which adds a size for each door in one go.

Keyed alike cylinders are made to order, so allow up to 7 working days. Because they're made for you, they can't be refunded.

Undo the fixing screw in the edge of the door and take the old cylinder out. Measure from the centre of the screw hole to the inside end (A) and to the outside end (B). A 40/50 cylinder is 40mm inside and 50mm outside. Sizes must match exactly: a 40/50 is not the same as a 50/40. Our euro cylinder measuring guide has photos of each step.