SR4 Fencing Essex - LPS 1175 Security Fencing

Steel mesh perimeter security fencing at a commercial site in Essex

SR4 Security Fencing Contractors in Essex

Looking for SR4 fencing in Essex? Collinson Fencing supplies and installs commercial and industrial fencing for businesses, organisations and contractors with defined perimeter security requirements. Based in Laindon, near Basildon, we serve customers across Essex, London, Kent, Hertfordshire and the wider South East of England.

SR4 is a familiar security rating associated with LPS 1175, a recognised standard for assessing a product's resistance to attempted forced entry. Where a project requires a specified level of security, it is important to identify a product with the appropriate verified classification and ensure that the proposed installation follows its requirements.

Whether you are planning a new industrial perimeter, protecting a security-sensitive facility or upgrading an existing site, we can discuss your project and help establish the next steps towards an appropriate fencing solution.

What Is SR4 Security Fencing?

SR4 is an established designation associated with LPS 1175, a standard used to assess resistance to defined attempts at forced entry. Testing takes place under specified conditions using designated tools and attack methods to establish the assessed resistance of the product.

SR4 is a different classification from SR1, SR2 and SR3. The appropriate rating for a particular site depends on its security assessment, the assets being protected and the specification provided for the project.

LPS 1175 classifications have evolved between editions of the standard. When specifying SR4 security fencing, confirm the applicable edition and exact classification shown on the product's certification. A general description such as high-security fencing does not, by itself, establish an LPS 1175 rating.

Where Can SR4 Security Fencing Be Used?

Depending on the product's certification and the project's security assessment, an appropriate SR4-rated system may be considered for security-sensitive commercial, industrial and infrastructure applications where a defined level of resistance to attempted intrusion is required.

Potential applications may include:

  • Security-sensitive industrial facilities
  • Sites containing valuable equipment, materials or assets
  • Infrastructure and utility projects where specified
  • Operational facilities with defined perimeter protection requirements
  • Commercial developments with enhanced security specifications
  • Projects where a security consultant or client specifies an LPS 1175-rated product

These are examples only. The product selected must be appropriate for the actual site, threat assessment and project specification.

Choosing the Right SR4 Security Fence

A security fencing system must be considered as part of the complete perimeter. Panels, posts, foundations, gates and access points all need to be appropriate to the specified product and the site's requirements.

Important considerations include:

  • Product certification: Check the exact LPS 1175 classification and configuration covered by the certification.
  • Fence height and layout: Confirm the dimensions and arrangement required by the project.
  • Gates and entrances: Ensure access points are considered within the overall security design.
  • Ground conditions: Assess foundations, gradients and installation constraints.
  • Installation requirements: Follow the specified product configuration and relevant installation instructions.
  • Whole-site security: Consider how the perimeter integrates with other security measures.

Where SR4 certification is required, the proposed product, permitted configuration and installation requirements should be verified before work proceeds.

SR4 Fencing Contractors in Basildon and Laindon

Collinson Fencing is based in Laindon, Essex, close to Basildon. We welcome enquiries from businesses, facilities managers, main contractors, architects and security consultants seeking fencing for commercial and industrial projects.

If you are searching for an SR4 fencing contractor in Essex, contact us to discuss your site, required classification and installation requirements. If you have a project specification, product reference or drawings, please provide them when enquiring.

SR4 Security Fencing Across Essex and the South East

From our base in Laindon, we welcome enquiries for security fencing projects throughout Essex and the wider South East of England, including:

  • Basildon, Laindon, Billericay and Wickford
  • Brentwood, Chelmsford and Southend-on-Sea
  • Grays, Thurrock and Stanford-le-Hope
  • Colchester, Harlow and surrounding Essex areas
  • London and Greater London
  • Kent and Hertfordshire

If your project is elsewhere in the South East, please contact us to discuss the location and scope of work.

SR1, SR2, SR3 and SR4 Security Fencing

LPS 1175 includes different security classifications to help specifiers identify products that meet the requirements of a project. SR1, SR2, SR3 and SR4 are familiar designations from earlier editions of the standard, with different assessed resistance levels.

The most appropriate rating depends on the project's security requirements and risk assessment. The precise classification and product certification should always be checked rather than relying on a rating name alone.

You can also read our guides to SR1 security fencing, SR2 security fencing and SR3 security fencing, or visit our LPS 1175 security fencing introduction for an overview of the standard.

Request an SR4 Fencing Quotation

Looking for SR4 fencing in Essex, Basildon, London, Kent or elsewhere in the South East? Contact Collinson Fencing to discuss your project and arrange a free, no-obligation quotation.

Please contact us to discuss your security fencing requirements, or call Collinson Fencing on 01268 411671.


Steel mesh perimeter fencing in Basildon, Essex Green mesh panel fencing in Basildon, Essex Mesh panel fencing in Chelmsford, Essex Mesh panel fencing in Brentwood, Essex

These photographs show examples of fencing installations by Collinson Fencing. They are illustrative examples and are not evidence that the pictured products or installations have LPS 1175 SR4 certification.

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