British Kitemark
BSI Approved


Will this fit your door? See the measuring guide ↓
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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.
Top-rated security outside. Instant exit inside. The APECS AP Thumbturn pairs the two highest security ratings a euro cylinder can earn — the BSI 3-Star Kitemark (TS007) and Sold Secure Diamond — with a thumbturn on the inside, so you can lock and unlock your door from indoors without a key. No hunting for keys in an emergency, and nobody locked in because the key's gone upstairs — ideal for family homes, older residents and rental properties.
Outside, it defends like the rest of the AP range: anti-snap, anti-drill, anti-pick, anti-bump and anti-plug-extraction, with no add-on handles or guards needed. If the cylinder is attacked, a sacrificial point breaks away and a patented interlocking cam locks down the internals — and the dedicated release button on the thumbturn means you can still open the door from inside and exit safely, even after a snap attack.
A straight swap for your existing euro cylinder — no drilling and no door modifications. Measure both sides of your current cylinder to the centre screw before ordering; the thumbturn side goes inside, so check which measurement is which. Unsure? Call 0151 521 8089 or send us a photo and our Liverpool team will size it for you.
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 3pm (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