Many people think about their locks only when something goes wrong.
Maybe a break-in, or perhaps an insurance claim gets knocked back because the front door lock doesn’t meet the required standard.
It’s an unpleasant way to discover you weren’t as protected as you thought.
We see this fairly often across Nottingham. Homeowners assume that because their door locks and feels solid, it’s doing its job properly. Sometimes that’s true. Often, though, the lock fitted years ago no longer meets current security standards, or it’s the type burglars know how to defeat in seconds.
This blog runs through the main lock types you’ll find on Nottingham homes, what separates a secure lock from one that just looks the part and how to work out what suits your property. As MLA-approved locksmiths, we fit and assess locks across the city every week, so we’ve seen what works and what doesn’t.
What makes a lock secure?
Before comparing lock types, it helps to understand what ‘secure’ means, rather than just going on appearance or price.
BS3621 is the British Standard most insurers look for on external door locks. To earn this rating, a lock must pass rigorous testing against picking, drilling and physical attack, and it needs specific features like anti-drill plates and hardened steel components. Many older locks, particularly on properties fitted before the 1990s, don’t meet this standard, even though they might look sturdy enough at first glance.
For uPVC and composite doors, you’ll also come across TS007 star ratings. This system rates the cylinder and the handles separately, with either a 3-star cylinder on its own, or a 1-star cylinder paired with 2-star handles, considered the gold standard combination. It’s a system specifically designed in response to lock snapping, which we’ll cover shortly.
If you’re not sure where your current locks stand against these benchmarks, we can check this for you during a home visit, usually within a few minutes.
Euro cylinder locks and lock-snapping
Euro cylinder locks are the most common type fitted to uPVC and composite doors, which are found in many homes across Nottingham, from new-build estates to older properties that have had replacement doors fitted over the years. They sit within the door’s multi-point locking mechanism and, on paper, should provide decent security.
The problem is that standard euro cylinders have a well-documented weakness. Lock snapping involves applying force to the exposed outer section of the cylinder until it breaks, giving direct access to the locking mechanism inside. It takes a burglar under a minute with basic tools, and it doesn’t require any specialist skill or noisy equipment, which is why it became such a popular method of entry.
We’ve fitted anti-snap cylinders to hundreds of Nottingham homes as a direct response to this issue. These locks are engineered with a deliberate weak point that allows the cylinder to snap in a way that keeps the internal locking mechanism intact, so the door stays secure even if someone attempts to break the cylinder. Look for cylinders that carry the TS007 3-star rating, or the 1-star cylinder and 2-star handle combination mentioned above, as your benchmark for protection.
Mortice locks
Mortice locks are less common than they used to be, but you’ll still find them on wooden doors throughout the city, particularly in period properties around areas like The Park and West Bridgford, or on older housing stock more generally.
A BS3621 5-lever mortice lock offers strong protection when properly fitted, with a solid deadbolt mechanism that resists both picking and forcing far better than cheaper alternatives. We regularly come across older mortice locks that look the part but have worn internals, missing lever mechanisms or never met the required standard in the first place.
Where possible, we recommend pairing a mortice lock with a cylinder rim lock for an extra layer of security. It’s a combination that works particularly well on original wooden doors, where replacing the entire door isn’t practical or desirable.
Multi-point locking systems
Multi-point locking systems have become standard on most uPVC and composite doors fitted in the past couple of decades. They work by engaging bolts at several points along the door frame rather than relying on a single latch or bolt. This spread of locking points makes forcing the door considerably harder, since an intruder needs to defeat multiple bolts rather than just one. That said, the cylinder remains the weak link in many locks, so pairing a multi-point system with a quality anti-snap cylinder matters just as much as the locking mechanism itself.
These systems can also drift out of alignment over time, particularly if a door has seen heavy use or the property has settled slightly. A misaligned multi-point lock might still appear to lock but won’t be engaging properly, so it’s worth having this checked periodically as part of general door maintenance.
Smart locks
Smart locks have grown in popularity across Nottingham, offering keyless entry through codes, cards or smartphone apps, along with the ability to check who’s come and gone via an activity log.
For many households, the appeal is obvious. You can let a tradesperson in remotely, give family members temporary access or stop worrying about spare keys under plant pots. For anyone regularly juggling access for cleaners, dog walkers or visiting relatives, it can simplify your daily life.
It’s worth being honest about the security side, though. Not every smart lock on the market meets British Standard requirements, and some home insurance policies have specific conditions around smart lock use that are easy to miss in the small print. We’d always recommend checking your policy before fitting one, and having it professionally installed rather than attempting a DIY fit, since incorrect installation can undermine the security the lock is meant to provide.
Matching the lock to your door and property
There isn’t a single ‘best’ lock that suits every Nottingham home. The right choice depends on your door material, the age of your property, and the specific vulnerabilities it might have.
A Victorian terrace with original wooden doors has different needs to a new-build estate with composite doors, and a period property in a conservation area might come with additional restrictions on what can be fitted. Copying whatever a neighbour has installed isn’t a reliable strategy either, since even similar-looking properties can have quite different security requirements.
A professional assessment takes the guesswork out of this, looking at your doors and locks rather than making assumptions based on age or property type alone.
And that’s where we can help. As an MLA-approved Master Locksmith and Assa Abloy service centre, we’ve spent years helping Nottingham homeowners work out which locks suit their properties.
We offer security assessments to check your existing locks against current standards and identify any weak points, whether that’s an outdated mortice lock, a euro cylinder without anti-snap protection or a multi-point system that’s fallen out of alignment.
If you’d like an honest assessment of your home’s locks, call us on 0115 942 2315.