THE ULTIMATE GUIDE TO
CHOOSING THE RIGHT SECURITY BARRIER
How UK businesses match the right physical security product to every opening, every risk and every way of trading.
What are Security Barriers, and What Does Trellidor UK Offer?
Physical security barriers are structural products fitted to a building's openings to physically prevent unauthorised entry. They do the one thing electronic systems can't: physically stop an attack at the point of intrusion.
A single "best" product doesn't exist. The right product is matched to the specific opening, risk and business context.
Trellidor UK manufactures six categories, each covered below.
TRELLIDOR UK PRODUCT CATEGORIES
RETRACTABLE SECURITY GRILLES
Flagship T950i and T700i. Shopfronts, doors and windows.
TRELLIDOR COMMERCIAL RETRACTABLE
Higher-spec grilles for LPS1175 SR2, SR3+.
TRELLIDOR ROLLERSTYLE
Larger-format lockdown for service doors, warehouse bays, forecourts and shopfronts.
TRELLIDOR LOUVRE SHUTTERS
Aesthetic-led shutters for hotels, offices, boutique retail.
ACCESS GUARD
Mobile expandable barriers with no fixed install. Kiosks, pop-ups, zoning.
TRELLIDOR SECURITY GRILLES
Fixed access-control gates for entrances and internal zoning.
Every product is manufactured to fit the specific opening and installed by our own nationwide teams.
Why Choosing the Right Barrier Matters
Choosing the wrong physical security product is expensive in three ways.
WASTED SPEND
An under-specified barrier that fails costs the outlay plus the incident. An over-specified barrier costs unnecessary capital and daily operating friction.
INADEQUATE COVER
UK insurers now specify LPS1175 certification as a condition of cover. A non-compliant barrier can invalidate a claim or trigger higher premiums.
OPERATIONAL FRICTION
A shutter blocking a fire route, a fixed gate where mobile was needed: daily costs that compound over the product's lifetime.
Getting the choice right delivers barriers matched to the specific risk, insurer-compliant certification, and aesthetic and operational fit.
Trellidor UK is a bespoke manufacturer and installer with 20+ years in the UK, part of a group with 4m+ barriers installed since 1976. Every project starts with a free site survey. Our certified products are independently tested, LPS 1175 certified by the LPCB and recognised by Secured by Design.
Book a Free Commercial Security Survey
A written specification for every opening. No obligation, no charge.
Where are Commercial Security Barriers Used?
Trellidor UK barriers are installed across every UK commercial sector. The specification varies; the principle doesn't: match the barrier to the specific opening and risk.
RETAIL
Shops, convenience, supermarkets, forecourts, kiosks, shopping centres, pharmacies, jewellers, off-licences.
Typical: retractable grilles on shopfronts, plus Security Gates on cash offices.
HOSPITALITY
Hotels, boutique accommodation, pubs, bars, restaurants.
Typical: Louvre Shutters (aesthetic-led), plus Security Gates on cellars.
HEALTHCARE
Pharmacies, GP practices, dental, care homes, hospital estates.
Typical: LPS1175 SR2+ grilles on dispensaries, plus Security Gates on internal zoning.
EDUCATION
Schools, colleges, universities, private schools.
Typical: grilles on IT, science and DT rooms, plus Rollerstyle on service entrances.
WAREHOUSING AND LOGISTICS
Distribution, e-commerce fulfilment, 3PL.
Typical: Rollerstyle on loading bays, plus commercial grilles on personnel access.
OFFICES AND MIXED-USE
Corporate, professional services, serviced offices.
Typical: Louvre Shutters or discreet grilles at reception, plus Security Gates on IT rooms.
A survey identifies which openings carry which risk, and the specification is built from the opening backwards.
Who Makes the Commercial Security Decision?
Commercial physical security is specified by five UK audiences.
BUSINESS OWNERS
AND MDs
For SMEs, the decision sits with the owner. Trigger: incident, insurance renewal, new premises.
Priority: certified protection that doesn't disrupt trading.
FACILITIES MANAGERS
Multi-site operators, hospitality, education, healthcare.
Priority: consistency across sites, compliance with head-office standards, minimum installation disruption.
SECURITY AND RISK MANAGERS
Larger organisations with dedicated security functions.
Priority: risk-based specification integrated with the wider security stack.
INSURANCE BROKERS
Regularly require LPS1175 barriers after a claim or for higher-value premises.
Priority: insurer-recognised certification and consistent quality.
ARCHITECTS AND SPECIFIERS
New-build and refurbishment.
Priority: aesthetic and structural integration, compliance with specified standards.
Trellidor UK works with all five, tailoring responses to each: insurer specs for brokers, project docs for specifiers, standardised rollout for FMs, plain-language recommendations for owners.
The Value of the Right Specification
A well-specified barrier delivers value across six dimensions, amortised across the decades-long life of the asset.
INSURANCE AND PREMIUM IMPACT
LPS1175-certified barriers meet the requirements of most UK commercial insurers, either as a condition of cover or a trigger for premium reduction.
BUSINESS CONTINUITY
A break-in costs far more than the stolen goods: damage, replacement stock, excess, lost trading, reputational impact. Certified barriers prevent the full cost cycle.
STAFF AND CUSTOMER SAFETY
Over 2,000 incidents of violence per day against retail workers alone (BRC 2025). Barriers reduce exposure during vulnerable hours.
ASSET AND LICENCE PROTECTION
For pharmacies, off-licences, jewellers, electronics retailers, barriers protect the licence, not just the goods.
AESTHETIC AND OPERATIONAL FIT
The right format integrates into how the business operates. A wrong-format barrier costs daily friction and customer-facing embarrassment.
LONG PRODUCT LIFE
Trellidor barriers are manufactured for decades, with maintenance limited to lubrication and inspection.
Book a Free Commercial Security Survey
Certification level, format and installation timing for every opening. No obligation, no charge.
When to Specify Physical Security
Five moments trigger most UK commercial physical security decisions.
NEW-BUILD AND FIT-OUT
Specify at design stage alongside electrics, HVAC and fire. Faster and cheaper than retrofitting, and often a requirement for cover to commence.
AFTER AN INCIDENT
Repeat targeting is the defining feature of UK organised commercial crime. Certified barriers immediately after a first incident are typically the single most effective preventative measure.
AT INSURANCE RENEWAL
Where the insurer specifies LPS1175, installation is planned around the renewal date. Brokers usually flag this in advance.
FACILITIES UPGRADE OR REFURBISHMENT
Signage refit, extension, mezzanine build-out: natural moments to upgrade. Combining works reduces disruption and total cost.
CHANGING RISK PROFILE
New stock, extended hours, new site, growth in cash handling, change of adjacent tenant, plus external shifts: rising crime, ORC patterns, changed insurer requirements.
For each trigger, Trellidor UK offers a free site survey with no obligation.
HOW TO CHOOSE THE RIGHT BARRIER
How to Choose the Right Barrier: a Five-Step Framework
Choosing the right physical security product is a decision, not a purchase. Five steps take a business owner or facilities manager from "we need better security" to a specification that matches the premises.
1
UNDERSTAND YOUR RISK
Characterise what you're protecting (stock, staff, cash, data, controlled substances), where you're located, your operating hours and the threats you face. A rural warehouse holding high-value inventory has a different risk profile from a city-centre office. The risk profile determines the certification level.
2
MAP YOUR OPENINGS
Physical security is opening-by-opening, not building-by-building. Identify every point of possible unauthorised entry: shopfronts, doors, windows, service points, internal zoning, external perimeters. Each opening needs its own specification: the shopfront may need SR2, the back door SR3, the stockroom SR1.
3
MATCH THE CERTIFICATION
LPS1175 is the UK's standard for intruder-resistant building components, tested by the LPCB. Ratings run from SR1 through SR8, by the tools and time required:
RATING
ATTACK AND TOOLS
TIME
SR1
Bodily force and stealth tools
1 min
SR2
Opportunist attack and hand tools
3 mins
SR3
Determined attack and wider tools
5 mins
SR4
Experienced attack and heavier tools
10 mins
Most UK commercial premises specify SR1 or SR2.
4
CHOOSE THE FORMAT
Five formats cover most applications:
Retractable Grilles
Shopfronts, windows, doors where visibility matters
Trellidor Rollerstyle
Larger openings where solid lockdown is preferred
Trellidor Security Grilles
Permanent access control internally
Access Guard
Where openings change or no fixed install
Trellidor Louvre Shutters
Where aesthetic excludes visible steel
More than one usually applies: retractable on the front, Rollerstyle on the back, Security Gates internally.
5
GET THE SPEC RIGHT
Tell your surveyor everything: opening dimensions and substrate, insurance requirements (bring the policy schedule), operational constraints (fire routes, delivery hours, aesthetics), regulatory constraints (CQC, controlled drugs, planning, listed status). The more the surveyor knows, the better the specification.
PRODUCT COMPARISON
Comparing the Options: the Trellidor UK Range and Honest Alternatives
Two comparisons matter: within the Trellidor UK range, and honestly against adjacent security categories, including where Trellidor isn't the right answer.
PART A: THE TRELLIDOR UK RANGE
CATEGORY
BEST FOR
FORMAT
CERTIFICATION
VISIBILITY
Retractable grilles (T950i and T700i)
Shopfronts, windows, doors
Retractable trellis
LPS1175 SR1 to SR2
High
Trellidor Commercial Retractable
Higher-risk commercial and industrial
Retractable grille
LPS1175 SR2 to SR3+
Medium-high
Trellidor Rollerstyle
Larger openings, service, forecourt, warehouse
Solid roller
[TBC]
None
Trellidor Louvre Shutters
Boutique retail, hotels, offices
Louvred
[TBC]
Adjustable
Access Guard
Kiosks, pop-ups, internal zoning, temporary
Mobile trellis
[TBC]
[TBC]
Trellidor Security Grilles
Fixed access points, internal zoning
Fixed gate
LPS1175 by spec
[TBC]
Most premises combine two or three categories.
PART B: HONEST ALTERNATIVES
Trellidor does not sell these, but they belong in any honest comparison.
VEHICLE BARRIERS AND BOLLARDS
For premises facing vehicle-based attack (ram raid on jewellers, ATMs, corner sites), certified crash-rated bollards (IWA 14, PAS 68) are essential, alongside opening protection.
SECURITY FILM FOR GLAZING
Inexpensive first-layer measure. Not equivalent to a certified barrier, but for lower-risk premises where visible security is unacceptable, film plus alarm can be proportionate.
REINFORCED AND LAMINATED GLAZING
For heritage, listed, or high-end premises. Substantially more expensive per opening, but wholly invisible.
ELECTRONIC ACCESS CONTROL
Complementary, not substitute. An unlocked door with a reader is still an unlocked door. Specify both.
ALARMS, CCTV AND MONITORED RESPONSE
Complementary. Electronic detects; physical prevents.
When Trellidor Isn't the Right Answer
For heritage premises where visible security compromises the fabric, security glazing usually beats a grille. For vehicle ram raid, certified bollards matter more than another retractable. For lower-risk premises with a tight budget, film, alarm and basic locks may be proportionate.
The right specification often involves Trellidor products; sometimes alongside non-Trellidor; occasionally not at all. A responsible survey tells you which case applies.
Book a Free Commercial Security Survey
One of our security specialists will visit your premises, assess every opening and provide a written specification with certification level, format and installation timing per opening. No obligation, no charge.
Built To Last. Backed By Trellidor.
Installed nationwide
20+ years in the UK
Part of the Trellidor Group, 4m+ installations worldwide
LPS1175 certified
Secured by Design recognised
FREQUENTLY ASKED QUESTIONS
Start with the risk, not the product. Characterise what you’re protecting; map every opening; match each to an LPS1175 certification level; choose the format; then get the specification right at survey. The five-step framework in this guide covers each step.
LPS1175 is the UK’s standard for intruder-resistant building components, tested by the LPCB. Products are rated SR1 (bodily force and stealth tools; 1 min) through SR8 (power tools; 20+ min). Most UK commercial premises specify SR1 or SR2.
Grilles (usually retractable) preserve visibility: you see through when closed. Shutters (usually roller) provide solid lockdown with no visibility. Grilles are used where display must remain visible; shutters where lockdown is preferred.
Yes. They solve different problems. Alarms and CCTV detect and record; physical barriers prevent. A determined attacker inside your premises with the alarm ringing is still stealing your stock.
Many UK commercial insurers specify LPS1175 certification as a condition of cover, particularly after a claim or for higher-value stock. Check your policy or speak to your broker.
Yes. Most Trellidor UK products can be retrofitted without structural work, subject to a survey confirming substrate suitability. Installation is typically completed within a single visit per opening.
Cost depends on opening size, LPS1175 rating, format and installation complexity. Survey-based quotations are the reliable answer, but expect hundreds to low thousands per opening for standard specs, higher for SR3+ or larger openings.