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Accreditations & Memberships

We are completely and totally committed to the very highest quality standards that we believe are essential in GRC manufacture, testing and installation.

To that end, GRC Synergies has achieved a number of accreditations, both individually and as part of the wider PBS Synergies Group. In addition, we are active members of all relevant trade bodies.


With accreditations for all key GRC testing standards to both GRCA and EN requirements, we are currently the only lab in the UK to be recognised by the UK Accreditation Service (UKAS) for GRC testing to ISO/IEC 17025:2017.

View our schedule of accreditation
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British Measurement and Testing Association

GRC Synergies are members of the BMTA, an independent group for private sector companies working within the measurement and testing industries.

Learn more about the BMTA
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ISO 9001

Our quality management systems are certified by the BSI as being ISO 9001:2017 compliant, with the award of certification FS616150. This covers the consultancy, design, engineering and testing for construction products manufactured from glass reinforced concrete, precast concrete and cast stone.

View our scope of accreditation
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We are active members of the UK-based International Glassfibre Reinforced Concrete Association (GRCA). Group employees act on both the GRCA Council and Board of Directors.

Learn more about the GRCA
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UK Cast Stone Association

We are members of the UKCSA, which was formed in 1991 to represent the leading UK manufacturers of cast stone.

Learn more about the UKCSA