Accreditations and quality

At GMG, we are committed to raising standards across every aspect of our work, striving for excellence in quality, environmental responsibility, and health and safety.


Our business operates in line with internationally recognised management systems, all of which are independently audited to ensure consistency, compliance, and continual improvement.

These frameworks underpin how we deliver our services, helping us meet client expectations while adhering to all relevant statutory and regulatory requirements.


We take our environmental responsibilities seriously, embedding sustainable practices into our operations and actively working to minimise our impact. At the same time, we prioritise the wellbeing of our people and partners by maintaining safe, compliant working environments across all projects.


Our accreditations demonstrate our ongoing commitment to best practice, giving our clients, employees, and stakeholders confidence in the way we operate and the standards we uphold.

Certifications

PAS2030 Certificate
Members - RECC
Constructionline Gold Certificate
GMG Quality Mark
GMG Quality Mark Protection
Investors in Young People - Platinum 2028
Investors in Young People- Platinum
NFRC Membership Certificate
Order of Distinction 17 Years
RoSPA Order of Distinction 17 years
GMG TrustMark
GMG TrustMark Licence Number
GMG Environmental ISO14001 Certificate
Quality Management GMG ISO9001 2015
Health Safety ISO GMG
Health Safety GMG ISO 45001
SBF Corporate Membership Certificate
20861 MCS Certificate Of Approval - 240525 CPS
CHAS
GMG Contractors Limited 2026 INCA Certificate
INCA Certificate

With these accreditations, you can trust that GMG Contractors meets and exceeds industry standards. We are committed to safety, quality, and sustainable practices in every project. 

Green Deal PAS Certified

ISO 9001: 2008 (International Quality Management)

ISO 45001: 2018 (Occupational Health & Safety)

ISO 14001: 2004 (Environmental Management)