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If you’ve ever worried about how secure your door really is, you’re not alone. Standard euro cylinder locks are fitted to most homes and commercial buildings across London, but not all of them are made equal.
We see it all the time, lovely doors, modern handles, but still fitted with old or basic locks that wouldn’t stand a chance against a screwdriver and a bit of force.
That’s where a high security euro cylinder upgrade comes in. It’s one of those quiet improvements that most people don’t think about until it’s too late, after a lock snapping attempt or a break-in nearby.
We’ve been upgrading euro cylinder locks across Chelsea, South Kensington, Kensington, and Earls Court for years, helping homeowners, landlords, and small businesses get proper peace of mind.
Whether it’s a timber front door, uPVC back door, or an aluminium shopfront, you’ll get a euro profile cylinder that’s tested, rated, and built to protect your property against the most common forms of attack.
Give us a ring if you want quick, professional advice — we’ll tell you exactly what kind of lock cylinder your door needs and fit it the same day if you like.
You might think, a lock’s a lock, right? But that’s where most people get caught out.
Basic locks can be forced, drilled, or snapped within seconds, literally seconds.
A high security cylinder upgrade means replacing your existing euro lock cylinder with one that’s designed to resist those attacks.
We’re talking anti-snap, anti-drill, and anti-bump protection. You’ll often see them graded as BS 3621, TS007 3-Star or Sold Secure Diamond Standard locks, which means they’ve been tested to withstand serious force and advanced tools.
This enhanced resistance really makes a difference, making them a huge upgrade on the locks installed as standard. They’re designed for use in the real world, and they’ve been tested for real-world break-in scenarios.
A TS007 3-Star cylinder isn’t just a fancy label. It’s the highest recognised security rating for euro profile cylinder locks in the UK.
That star rating means it’s been independently tested against snapping, drilling, bumping, and picking.
When you go for a high security cylinder upgrade, we’ll typically recommend a TS007 3-Star model from trusted manufacturers, the same type insurers often expect for proper cover.
You’ll sometimes hear about 5-Star cylinders, but that usually refers to newer enhanced testing (often under the Sold Secure Diamond label).
In practical terms, both options mean you’re fitting one of the strongest lock cylinders on the market.
We often fit models from Mul-T-Lock, Yale Platinum 3-Star, and other Master Locksmiths Association and Hardware Federation-approved brands. They’re solid, come in brass, chrome, and nickel finishes, and can be keyed alike if you’d rather carry one key for multiple doors.
If you’ve got uPVC or composite doors, you’ve almost certainly got a euro cylinder lock fitted.
They’re everywhere in London — simple, affordable, easy to replace — but not always as secure as they should be.
Standard euro profile cylinders are the ones burglars target because they can be snapped clean in half.
Once the core breaks, the lock cylinder pops straight out, and the door can be opened without the key.
That’s why upgrading to an anti-snap euro cylinder makes such a difference.
With a high security cylinder upgrade, the weak point is reinforced with a steel bar, making snapping almost impossible.
Anti-snap prevents the lock from being broken in half, often using sacrificial points and reinforced bars.
Anti-bump stops a “bumping” technique that uses a special key to jiggle the lock open, often with V-pins.
Anti-drill includes hardened pins and balls to make it harder for a burglar to drill through the lock cylinder.
Every property is different. Some doors are uPVC, others aluminium or solid wood; we deal with them all.
Our technicians carry a full range of euro profile cylinders on the van: double cylinder, thumb-turn, and keyed alike sets.
That means whatever your door types, we can usually complete your secure door lock replacement in one visit.
We’ll match the finish to your existing hardware, no mismatched brass and chrome.
And if you’ve got a commercial door that needs to stay accessible from one side only, we’ll fit the right combination of thumb turn and keyed alike cylinders for safety and convenience.
If you’ve ever watched a video of someone snapping a lock cylinder, it’s a bit of a shock.
That’s why these upgraded euro profile cylinders are engineered with snap-off sacrificial sections, so even if someone tries, the lock stays secure.
The anti-drill feature is another layer. Hardened pins and reinforced plates stop drill bits from penetrating the core.
Anti-bump pins do the same for key-bumping attacks (a trick thieves use with a filed-down key).
So when you hear us talk about a high security cylinder upgrade, that’s what you’re getting, real, physical protection built into the metal.
Most home and business insurers now expect euro cylinder locks: TS007 3-Star or Sold Secure Diamond Standard cylinders on external doors.
These euro lock cylinders have been through serious testing, anti snap, anti drill, anti twist, anti pick, you name it.
They’re also approved by the British Hardware Federation and other trade bodies for resistance against the most common attack methods.
If you’ve had a break-in, or your insurer has requested an upgrade, we’ll fit an insurance-approved lock cylinder that ticks all the right boxes for compliance and peace of mind.
We also fit high security cylinder upgrades for offices, retail shops, and commercial buildings across West London.
Many businesses we work with have older locks that no longer meet insurance standards, or worse, use the same key system for everything.
We’ll assess your setup, replace old euro profile cylinders with anti-snap and anti-drill options, and make sure your restricted key system complies with safety and fire codes.
For added convenience, we can also integrate keyed alike or master key systems to simplify access control.
We’re a local team, not a call-centre outfit.
We know the properties around Chelsea and Kensington inside out, old Victorian timber doors, modern flats with uPVC fittings, even aluminium shopfronts.
You’ll get clear pricing, fast response, and friendly, professional service.
We don’t push what you don’t need. If your existing lock cylinder can be adjusted or re-pinned instead of replaced, we’ll tell you straight.
Our goal is simple: keep your property secure without making life complicated.
Give us a call today to discuss your lock cylinder upgrade installation or just to get some friendly, expert advice.
We’re professional locksmiths, its what we do. Get ahead of the issues and contact your local locksmiths today. We’re available 24/7 – and aim to reach you within 30 minutes.
Don’t wait for a security scare to make the change.
A proper anti-snap euro cylinder fitted today will protect your property for years to come.
Yes, you can have all your euro lock cylinders set up to work from one key. It’s convenient and still completely secure.
A high security cylinder lock typically lasts over ten years with normal use.
Do you install double cylinder locks?
Yes, we supply and install a range of double cylinder locks to ensure the highest level of protection.
It’s the official British standard for lock security. A TS007 3-star cylinder or higher is recognised by The Hardware Federation, insurers and the Master Locksmiths Association as meeting the highest levels of protection.
Not really. A quality TS007 3-Star euro cylinder typically costs less than you’d expect, especially compared to the cost of a break-in. We’ll give you a clear, fixed quote before we start.
07442137578
contact@chelsealocksmith-london.co.uk