Take a photo of your cylinder and our AI measures it to the millimetre, then matches a like-for-like replacement or a better-security lock that fits. Order it delivered tomorrow, or have a local locksmith fit it. Prices shown upfront, next to Toolstation, Screwfix and B&Q.
Euro cylinders, thumbturns, keyed-alike sets and more, by size, rating and brand. Live stock, prices compared, next-day delivery.
Browse locks → AIOur own AI measures your cylinder from one photo and matches it like-for-like, or to a better-security lock that will fit. Takes about a minute.
Start the photo finder →How to measure, how to change a cylinder in ten minutes, what TS007 stars mean, and what your insurer expects.
Read the guides →Enter your postcode and see recent break-ins within a mile, from official police data, and what actually stops them.
Check my postcode →The cylinders people order most: live stock, our delivered price against RRP, and what fitting by a local locksmith adds.
Prices include VAT and next-day delivery. Stock and RRP come straight from our supplier feed and update hourly.
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Pick the cylinder, choose the size and finish, pay. Despatched the same day if you order by 4pm.
Unscrew one screw, lay the cylinder on a sheet of A4 with a 10p on it, take a photo. Our AI measures it to the millimetre and shows you what fits.
We supply the cylinder and connect you with a vetted locksmith nearby. You pay them directly for fitting, at a price agreed before they start.
Measure from the centre of the fixing screw hole to each end of the cylinder, in millimetres. Those two numbers are the size, for example 40/50. Or use our photo lock finder: take the cylinder out (one screw), photograph it on a sheet of A4 with a 10p resting on it, and we measure it for you.
Delivered to your door, a standard euro cylinder is about £19 and an anti-snap TS007 3-star cylinder £36 to £78 depending on brand. Fitted by a local locksmith, expect £79 to £150 in total. Prices are shown before you order.
Lock snapping is the most common way uPVC and composite doors are broken into. A TS007 3-star cylinder is tested to resist snapping, drilling and picking, and is what most insurers and police Secured by Design guidance expect on an external door.
Yes. It is held by one screw in the edge of the door and takes about ten minutes. Our guide shows every step, and if you would rather not, we can connect you with a vetted local locksmith.
Order before 4pm Monday to Friday and it is despatched the same day for next-day delivery.
On most 3-star cylinders, yes, and we show their price next to ours so you can check. Some of our best-value lines are trade products the big stores do not stock at all.
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