TL;DR
- Front door security depends on five components working together: slab, frame, multipoint lock, cylinder, and installation. A weakness in any one undoes the rest.
- PAS 24:2022+A1:2024 is the current UK enhanced security standard and certifies the complete doorset, not just the slab or lock. It is effectively required on new builds in England under Approved Document Q.
- The single highest-value upgrade is a TS 007 three-star or Sold Secure SS 312 Diamond cylinder, which costs £80 to £150 more fitted but resists snapping, picking, drilling, and bumping.
- Laminated glazing, security-rated hinges, letterplate restrictors, and a properly fixed frame matter more than marketing terms like “high security” or “advanced locking”.
Most homeowners assume their front door is reasonably secure because it has a “good lock”. The reality is more complicated. A front door is a system, not a single component, and it is only as secure as its weakest part. A premium multipoint lock fitted to a flimsy frame is no harder to defeat than a basic lock on a solid one. A three-star cylinder paired with an unreinforced letterplate gives a determined intruder a way in. A door slab tested to PAS 24 means very little if it has been fitted into a poorly prepared opening.
This guide cuts through the marketing language and gives you a clear picture of what genuinely makes a UK front door secure in 2026. We will walk through the standards that matter, the components that earn their place, the common mistakes that quietly undo good intentions, and the questions to ask before you order or replace a door. By the end, you will be able to look at your own front door, or any quote you receive, and judge whether the security claims hold up.
If you are checking whether your current entrance is secure enough, it can also be useful to compare it with modern replacement options. Brow Windows’ range of secure front doors for UK homes can help you understand what to look for in a complete doorset, including the door style, frame, glazing, and locking system, rather than focusing on the lock alone.
What makes a front door secure?
Front door security comes down to five elements working together. Get any one of them wrong and the whole system weakens.
The slab is the door itself, which needs to resist physical attack: kicking, ramming, prying. A 44mm composite slab or a quality aluminium door with internal reinforcement is hard to defeat physically. A thin or hollow slab is not.
The frame is what the slab hangs in. A frame that is not properly reinforced or properly fixed to the surrounding masonry can be levered away from the wall, which makes the lock irrelevant. Most forced-entry attacks on UK front doors target the frame and the lock cylinder, not the slab itself.
The locking system is the multipoint mechanism that engages with the frame at several points when the door is locked. A modern multipoint lock with hooks, deadbolts, and rollers is genuinely hard to defeat without specialist tools.
The cylinder is the small barrel that the key turns. It is also the single most attacked component on a UK front door, because cylinder snapping is the quickest method of forced entry available to opportunistic intruders. Cylinder rating matters more than almost any other security specification.
The installation is what holds the whole system together. A premium door fitted into a square, properly reinforced opening with quality fixings and correct sealing is genuinely secure. The same door fitted lazily is a different product entirely.
What is PAS 24?
PAS 24 is the UK enhanced security standard for doors and windows. The letters stand for Publicly Available Specification, which is a category of standard published by the British Standards Institution. PAS 24 sets out a series of physical attack tests that a complete doorset, frame, and slab combined must pass to earn certification.
The testing is rigorous and physical. A PAS 24 doorset is subjected to mechanical loading, where forces of around 450kg are applied to the lock and hinge sides to test resistance to forced opening. It is hit with a soft impact bag of around 30kg, simulating a shoulder charge. It is hit with a hard impact ram of around 50kg, simulating a kick or battering attack. And finally, it is given over to a tester with a representative kit of intruder tools who has fifteen minutes to attempt to break in.
If the doorset survives all of this without failing, it earns PAS 24 certification. If it fails any single element, it does not. There are no grades within PAS 24: a door either passes or it does not.
PAS 24:2022+A1:2024 explained
The current published version of the standard is PAS 24:2022+A1:2024, with the amendment dated 30 September 2024. Many product brochures and installer websites still refer to PAS 24:2022 or even older versions, which can be confusing for homeowners trying to verify what they are buying.
The practical implication is straightforward. If you are buying a new front door in 2026, the certification you want to see is PAS 24:2022+A1:2024 or, at a minimum, PAS 24:2022. Anything older than 2016 should be treated with caution. Reputable manufacturers update their certifications as the standard evolves, and they should be able to provide a current test certificate on request.
One important detail: PAS 24 certifies the complete doorset, not just the slab or the lock. A door slab is not “PAS 24” in isolation. Certification applies to a tested combination of slab, frame, hinges, lock, cylinder, and any glazing, fitted as the manufacturer specifies. Substituting components on a PAS 24 doorset can technically void the certification.
Is PAS 24 a legal requirement in the UK?
For new dwellings in England, yes, in effect. Approved Document Q of the Building Regulations sets a requirement for reasonable provision to resist unauthorised access into new homes. PAS 24 is the recognised route to demonstrating compliance with Approved Document Q for any easily accessible door or window in a new dwelling.
For replacement doors in existing homes, PAS 24 is not legally required. You can fit a non-certified door if you wish, and many homeowners do. However, specifying a PAS 24 doorset on a replacement is an inexpensive way to demonstrably improve security, and most reputable manufacturers offer PAS 24 certification as standard or as a low-cost option.
Approved Document Q applies specifically in England. The other UK nations have similar but separately worded requirements. The practical guidance for homeowners is the same regardless: PAS 24 is the benchmark to look for.
PAS 24 vs Secured by Design vs British Kitemark
Three security accreditations come up regularly in UK door marketing, and they are not interchangeable.
PAS 24 is the underlying physical performance standard. It is the technical baseline.
Secured by Design is the police-backed accreditation scheme. A Secured by Design product has met PAS 24 as a minimum, and the manufacturer has additionally been audited and approved by the Police Crime Prevention Initiatives team. Secured by Design is sometimes referred to as Police Preferred Specification. It is a stronger marker than PAS 24 alone, because it adds organisational and audit standards on top of the product test.
The British Kitemark is the BSI’s own certification mark, indicating that a product has been tested and is regularly audited by BSI. A Kitemarked cylinder, for example, has been tested against the cylinder standards and continues to be checked. Kitemarks appear on individual components more often than on whole doorsets.
For a homeowner, the practical priority order is: PAS 24 as the baseline, Secured by Design as the upgrade for higher-risk situations, and Kitemark on the cylinder as a non-negotiable.
Locks explained: multipoint locks, three-star cylinders, and anti-snap protection
The locking system is where the most common confusion sits, and where small specification differences make a large security difference.
Multipoint locks
A multipoint lock engages the door to the frame at several points simultaneously. When you lift the handle and turn the key, hooks, deadbolts, and rollers all throw at once, pulling the door tight against its seals and locking it in multiple positions along its height. Five-point and eight-point systems are common; the higher number simply means more engagement points.
Multipoint locks are now standard on virtually all replacement front doors in the UK. The differences worth caring about are the manufacturer (recognised brands such as Yale, ERA, Avocet, Mila, and similar are reliable) and the engagement quality, which depends as much on installation alignment as on the lock itself. A multipoint lock that does not pull the door fully tight against the seals when locked is poorly fitted, not a faulty product.
Three-star cylinders and anti-snap protection
The cylinder is the single most important security specification on any front door. It is also the most attacked component, because cylinder snapping is fast, quiet, and effective on any cylinder that has not been specifically designed to resist it.
The standard to specify is a TS 007 three-star cylinder. The TS 007 standard rates cylinders by stars: a one-star cylinder offers basic protection, a three-star cylinder is engineered specifically to resist snapping, picking, drilling, and bumping. A one-star cylinder paired with a two-star handle delivers equivalent overall protection, but for most homeowners, the simpler route is to specify a three-star cylinder directly.
The other widely recognised top-tier rating is Sold Secure SS 312 Diamond. A Diamond-rated cylinder has passed an even more rigorous attack test and represents the highest cylinder security available on the consumer market.
The cost difference between a basic euro cylinder and a TS 007 three-star or SS 312 Diamond cylinder is around £80 to £150 fitted. This is the single highest-value security upgrade you can specify on any front door, and it is the first thing to check on any quote.
Anti-pick, anti-drill, anti-bump
These three terms describe specific attack methods that quality cylinders are designed to resist. Picking is the manipulation of pins with specialist tools. Drilling involves attacking the cylinder body with a power tool. Bumping uses a specially cut key to shock the pins into alignment. A TS 007 three-star or SS 312 Diamond cylinder includes resistance to all three by design, alongside anti-snap protection.
Door materials compared: composite, uPVC, aluminium, and timber
Material affects security, but less than most marketing suggests. The slab is one part of the system; the locking and installation usually matter more.
Composite doors typically offer strong security as standard. The dense slab is difficult to attack physically, and quality manufacturers include three-star cylinders and reputable multipoint locks in the base specification. PAS 24 certification is widely available and often standard.
uPVC doors can be every bit as secure as composite, provided the specification is right. The frame profile needs decent steel reinforcement, the multipoint lock should be a recognised brand, and the cylinder must be a TS 007 three-star or SS 312 Diamond. Cheap uPVC doors with budget cylinders are the doors that show up in police statistics. Well-specified uPVC doors do not.
Aluminium doors are inherently rigid and resistant to physical attack. PAS 24 certification is standard on most modern aluminium entrance doors, and the structural strength of the material supports larger glazed openings without compromising security. The thermal break in the frame profile is the part to ask about, since poorly designed thermal breaks can be a weak point.
Timber doors, particularly engineered timber, can be highly secure when properly specified, but security is more dependent on the slab construction and frame than on the engineered alternatives. Solid hardwood doors with steel reinforcement and quality multipoint locking can meet PAS 24, but cheaper timber doors often cannot.
The honest framing is that material is one variable among several. A well-specified door in any of these materials, fitted properly, will resist forced entry. A poorly specified door in any material will not.
Glazing, letterplates, hinges, and frames
The components that homeowners often overlook are frequently the ones that get attacked.
Glazing
Decorative glazing in or around a front door is a common feature, but it has security implications. Toughened glass shatters into small pieces when broken, which makes a forced entry through the glass relatively quick. Laminated glass holds together when broken, which prevents the most common attack route on glazed front doors.
For any front door with glazing within reaching distance of the lock, laminated glass is the specification to ask for. Reputable manufacturers fit laminated glass as standard on PAS 24 doorsets, but it is worth confirming on your quote.
Letterplates
The letterplate is a known vulnerability on UK front doors. Letterplate fishing, where intruders use tools through the letterplate to manipulate door handles, locks or keys left near the door, is a recognised attack method. PAS 24 doorsets include letterplate restrictors that prevent this, typically internal flaps or brushes that block tool access. Older doors without restrictors can be retrofitted with letterplate cowls or internal restrictor plates as an inexpensive upgrade.
Hinges
Hinges are an underrated security component. Quality security hinges are bonded to the door and frame in a way that resists removal, and they include hinge bolts on the closing side that engage with the frame when the door is shut. This prevents the door from being lifted off its hinges or levered open from the hinge side. PAS 24 doorsets include security-rated hinges as part of the certified system.
Frames
The frame is what every other security component depends on. A properly reinforced frame, mechanically fixed to the surrounding masonry with appropriate fixings at correct intervals, is the foundation of front door security. A weak frame undermines the most expensive lock on the market.
This is also where installation quality is most visible. The frame must be plumb, square and level in three planes, packed with shims where needed, and fixed with screws long enough to engage the masonry properly. Poorly fixed frames can be levered away from the wall, which is a common forced-entry method on cheaply fitted doors.
Common front door security mistakes
A handful of mistakes appear repeatedly in UK homes.
The first is keeping the original cylinder when a new door is fitted. Some installers reuse the existing cylinder if it is in good condition, which can quietly undo the security upgrade the homeowner is paying for. Always specify a new TS 007 three-star or SS 312 Diamond cylinder with a new door.
The second is leaving keys near the letterplate. Hooks, shelves, and bowls within reach of the letterplate are letterplate fishing waiting to happen. Move keys away from the door, ideally to a separate room, and fit a letterplate restrictor if your door does not have one.
The third is treating multipoint locks as automatically secure. The multipoint lock is necessary but not sufficient. Without a proper cylinder, even the best multipoint lock can be defeated by snapping the cylinder.
The fourth is over-trusting marketing terms. “High security”, “burglar resistant,”, “advanced locking,” and similar phrases mean nothing without specific certifications behind them. Ask for the PAS 24 certificate, the cylinder rating, and the manufacturer of the multipoint lock.
The fifth is reusing a tired frame. A new door slab in an old frame rarely seals properly and rarely secures properly either. Replace the frame as part of the job.
New build, renovation, flat or period home: what should you choose?
The right security specification depends on the property and the situation.
For a new build in England, PAS 24 is effectively required by Approved Document Q for accessible doors and windows. The developer should be fitting PAS 24 doors as standard. If you are buying a new home, ask to see the certification.
For a typical replacement on a 1960s to 1990s home, a PAS 24 composite or uPVC doorset with a TS 007 three-star cylinder is the right specification. This is the mainstream choice for the majority of UK homeowners and represents strong, sensible security.
For a flat entrance door, particularly in a building with shared access, security requirements often come from the building’s insurance policy or management agreement. PAS 24 is a sensible baseline. For higher-risk situations, a Secured by Design specification or a steel security door may be appropriate.
For a period home where appearance matters, engineered timber with PAS 24 certification gives you sympathetic looks with proper security. Quality manufacturers offer this combination, though it sits at the upper end of the price range.
For coastal, isolated, or insurance-flagged postcodes, specifying Secured by Design accreditation rather than PAS 24 alone is worth the modest premium. Some insurers offer slightly preferential terms on Secured by Design installations, though policy wording varies and should be checked individually.
Questions to ask before buying a secure front door
Before you sign a quote for any front door, the following questions should get clear, specific answers.
Is the doorset PAS 24 certified? Which version (PAS 24:2022 or PAS 24:2022+A1:2024)? Is the certification for the complete doorset, or only for individual components?
What cylinder is included? TS 007 three-star, Sold Secure SS 312 Diamond, or something else? Is it included in the price, or charged as an upgrade?
What multipoint lock is fitted? Which manufacturer? How many engagement points?
Are the hinges security-rated? Do they include hinge bolts on the closing side?
If glazed, is the glass laminated or only toughened?
Is a letterplate restrictor fitted as standard?
Is the frame fully replaced as part of the job, and how is it fixed to the surrounding masonry?
Is the installation FENSA or CERTASS certified?
An installer who answers these questions confidently and specifically is one to take seriously. An installer who hedges or deflects is telling you something useful about how they work.
Final homeowner checklist
Use this as a quick reference when assessing your existing front door or comparing quotes for a replacement.
The doorset carries PAS 24 certification, ideally PAS 24:2022+A1:2024. The cylinder is TS 007 three-star or Sold Secure SS 312 Diamond, and is included rather than offered as an upgrade. The multipoint lock is from a recognised manufacturer with at least five engagement points. Hinges are security-rated and include hinge bolts. Any glazing is laminated, particularly within reach of the lock. The letterplate has an internal restrictor. The frame is being fully replaced and properly fixed. The installation will be FENSA or CERTASS certified. The quote includes a clear manufacturer’s product warranty and a separate installer’s workmanship warranty.
If your existing door does not meet these standards but is otherwise sound, several upgrades can be made retrospectively. A new TS 007 three-star cylinder is straightforward. Letterplate restrictors and cowls are inexpensive. Hinge bolts can be retrofitted by a competent locksmith. Glazing is harder to upgrade without replacing the door, but laminated film is available as a compromise.
Frequently asked questions
1. What does PAS 24 mean?
PAS 24 is a British Standards Institution Publicly Available Specification that sets out enhanced security performance requirements for doors and windows. A PAS 24 doorset has been physically tested against forced-entry methods, including mechanical loading, impact attacks, and a fifteen-minute manual attack test. The current version is PAS 24:2022+A1:2024.
2. Is PAS 24 mandatory for front doors?
For accessible doors in new dwellings in England, PAS 24 is the recognised route to compliance with Approved Document Q of the Building Regulations, so in practice it is required. For replacement doors in existing homes, it is not legally required, but is widely available and strongly recommended.
3. Is PAS 24 the same as Secured by Design?
No. PAS 24 is the underlying product test. Secured by Design is the police-backed accreditation scheme that requires PAS 24 as a minimum and adds organisational audit and approval. Secured by Design is sometimes called Police Preferred Specification and represents a higher-tier marker.
4. Does PAS 24 mean a door is burglar-proof?
No door is burglar-proof. PAS 24 means the doorset has resisted a defined set of attack tests, which significantly raises the difficulty of forced entry. Determined intruders with enough time and the right tools can defeat any door. The point of PAS 24 is to ensure your door is not the easy option on the street.
5. What is the best lock for a front door in the UK?
A multipoint locking system from a recognised manufacturer, paired with a TS 007 three-star anti-snap cylinder or a Sold Secure SS 312 Diamond cylinder. This is the standard specification for serious front door security in 2026.
6. Are multipoint locks secure?
Yes, when paired with a properly rated cylinder. A multipoint lock without a three-star or Diamond cylinder is vulnerable to cylinder snapping, which defeats the lock regardless of how many engagement points it has. The cylinder is the priority specification.
7. What is a three-star cylinder?
A cylinder rated to TS 007 three stars by the British Standards Institution. Three-star cylinders are engineered to resist snapping, picking, drilling, and bumping. They are the recognised baseline for serious UK front door security and cost £80 to £150 more fitted than a basic euro cylinder.
8. Is a composite door more secure than uPVC?
Not automatically. Both can meet PAS 24 with the right specification, and both can be vulnerable with the wrong specification. Composite slabs are physically thicker and harder to attack, but the cylinder, multipoint lock, frame, and installation matter more to overall security than the slab material itself.
9. Do front doors with glass panels pass PAS 24?
Yes, provided the glazing is laminated rather than only toughened, and the doorset has been tested as a whole, including the glazed panels. Most reputable manufacturers offer PAS 24 certification on glazed door configurations as standard.
10. Can I upgrade my existing front door instead of replacing it?
Several upgrades are possible without full replacement. A new TS 007 three-star cylinder is the most valuable single upgrade. Letterplate restrictors, hinge bolts, security strike plates, and laminated film on glazing are all retrofittable. A whole-door replacement gives the strongest result, but selective upgrades can meaningfully improve a sound existing door.
11. What should I ask my installer before ordering?
Ask for the PAS 24 certificate, the cylinder rating, the multipoint lock manufacturer, the hinge specification, the glazing type (laminated or toughened), and confirmation that the frame is being fully replaced. A confident installer answers these specifically; a vague installer is telling you something useful.
12. Will a secure front door reduce home insurance?
Possibly. Some insurers offer slightly preferential terms on installations that meet recognised security standards, particularly Secured by Design. Policy wording varies considerably between insurers, and the discount is rarely large. The stronger argument for security investment is reduced risk of forced entry, not insurance savings.