Security rated fencing SR1 plays a key role in protecting many UK sites. With minimal investment it adds a reliable delay against opportunistic intruders.
CLA’s GuardSAFE Defence system holds LPS 1175 SR1 certification. This means panels, posts, fixings and gates meet independent testing standards. You get fencing certified to resist entry using basic tools for at least one minute, giving valuable time for security response.
Understanding LPS 1175 SR1
Definition and structure
LPS 1175 is a Loss Prevention Standard that measures forced‑entry resistance. It is developed by the Loss Prevention Certification Board. It covers fencing, gates and barriers, assigning SR levels from SR1 (A1) to SR8 (highest).
- SR1 (A1): tested with basic tools such as pliers, screwdrivers and small hand tools. It must resist attack for at least one minute.
- Higher SR levels involve more advanced tools and longer delays
Why SR1 matters
- Used where risk is low to moderate.
- Suitable for schools, warehouses, community buildings and light industrial sites
- Adds visible deterrence.
- Meets many insurance and security audit requirements.
Testing and certification process
- Products are tested as a complete system: panels, posts and fixings.
- Only certified designs pass official approval.
- Random audits ensure ongoing compliance.
The GuardSAFE Defence System by CLA Security Fencing Systems
CLA Security Fencing Systems has designed the GuardSAFE Defence system to meet SR1 certification with full compliance to LPS 1175 standards.
Key system attributes
- GuardSAFE 358 mesh
Tight‑aperture single skin mesh panel that resists cutting and climbing while maintaining visibility. - Secure fixings
Anti‑tamper bolts connect panels to posts. Tools like pliers or screwdrivers cannot remove sections quickly. - Powder‑coated steel
Zinc‑coated and coloured to resist corrosion. Durable in UK weather conditions. - Gate systems
CLA offers gates built to the same standard. Hinged or sliding gates can match SR1 rating when built and installed as per tested design. - Accredited design
CLA has achieved certification so GuardSAFE fencing meets official standards.
How GuardSAFE integrates into your security plan
- Works with CCTV, alarms and access control.
- Ideal first‑line barrier in a layered defence.
- Suitable for uneven terrain and modular placement.
- Available from stock or custom‑fabricated for specific projects.
Benefits of Security rated fencing SR1
Security rated fencing SR1 offers measurable advantages across sectors:
Proven delay against intrusion
The system is certified to a recognised standard. You can rely on its performance under attack using basic tools. That time allows guards or surveillance to respond.
Visual deterrent
The robust mesh, secure fixings and overall quality appearance discourage opportunistic attempts. Intruders are less likely to attempt cutting or climbing when faced by a visible SR1‑rated fence.
Cost‑effective majority solution
SR1 meets security needs for many low‑risk sites at a fraction of cost of higher ratings such as SR3 or SR4. Installation and material costs remain modest.
Versatile use cases
Examples where SR1 fencing fits:
- A school boundary protecting buildings, playground and parking.
- A data storage facility adding visible perimeter defence.
- A community recreation ground or sports club.
- A local authority office or small business park.
In each case SR1 fencing offers controlled access and defined limits.
Ease of maintenance
Powder‑coated steel panels and posts cut down on rust and wear. Regular checks of fixings and panels ensure system integrity. Lifetime expectancy is over 25 years if maintained.
Compliance and insurance
Meeting LPS 1175 SR1 can fulfil requirements for insurance and risk assessments required by many organisations.
Perimeter security fencing in the UK and where SR1 fits
Market context
Perimeter security fencing is essential across public, commercial, industrial and utility sectors in the UK. Trends include more emphasis on crime prevention design and choosing rated fencing.
Usage breakdown by sector:
- Education: schools choose SR1 fencing around playgrounds and car park zones.
- Public sector: local authority depots and facilities often go for SR1 or SR2 as cost‑effective measure.
- Commercial / industrial: light industrial warehouses and small business parks.
- Utility: sub‑stations or water installations of moderate risk.
SR1 (A1) remains the minimum accepted standard for many public installations.
SR1 versus higher SR levels
| Rating | Toolkit | Attack delay | Typical use |
| SR1 (A1) | Basic hand tools | ~1 min | Schools, small businesses |
| SR2 (B3) | Bolt cutters, saws | ~3 min | Industrial, utilities |
| SR3 (C5) | Power tools | ~5 min | Data centres, critical sites |
| SR4+ (D10+) | Heavy tools, grinders | 10 min+ | High‑security, mission‑critical |
SR1 suits most lower‑risk applications. For higher‑risk or high‑value assets SR2 or SR3 may be needed.
Uptake of GuardSAFE across UK sites
CLA has supplied GuardSAFE mesh to industrial and sporting venues. Recent projects include installations for industrial facilities and spectator areas at sports clubs, combining safety and visibility.
Real‑world examples and use cases
Case example 1: Local school perimeter boundary
A typical primary school chooses GuardSAFE 358 SR1 mesh for its boundary fence. The tight mesh prevents climbing; bolts are hidden to prevent tampering. The system integrates with CCTV and keypad turnstiles. As an SR1 certified fence, the school passes inspection by local authorities and insurers.
Case example 2: Light industrial warehouse
A small warehousing company installs GuardSAFE Defence system across its perimeter. The fence deters theft of stored goods and prevents casual intrusion. The material cost remains affordable. CCTV is mounted on posts to support monitoring.
Case example 3: Public sports facility
Spectator areas are separated from play by GuardSAFE mesh. Officials choose SR1 fencing for both safety and aesthetics. The mesh has a rounded top to reduce injury risk. The fence marks boundaries clearly and deters access during closed hours.
Technical and practical advice for specification and installation
Checklist for specifying GuardSAFE SR1 fencing
- Confirm the panel and post design meets SR1 certification.
- Match gates and fixings to the same standard.
- Choose powder coat colour to suit your site.
- Plan CCTV, lighting and alarm integration.
- Schedule post‑installation inspection and routine checks.
- Lay out fence with minimal gaps and secure fixings accessible only by authorised staff.
Tips for installation
- Survey the site before starting and follow recommended post spacing.
- Ensure fixings and clamps are tightened correctly.
- Avoid field modifications unless pre‑approved.
- Train staff to inspect fence regularly—check bolt integrity and signs of tampering or cutting.
Final Thoughts
Security rated fencing SR1 meets a critical need: delay against opportunistic intrusion using basic tools. It’s cost‑effective, visible and compliant with recognised security standards.
CLA’s GuardSAFE Defence system provides tested panels, posts, gates and fixings that meet the SR1 threshold. With certified standards and durable materials, it fits neatly into perimeter security fencing UK requirements.
Whether you protect a school, warehouse, sports facility or community building, GuardSAFE Security rated fencing SR1 delivers peace of mind without overspending.
Looking to specify on your next project? Contact CLA Security Fencing Systems for advice and a quote to suit the needs of your site.
