Accreditations and awards

Our accreditations and awards as an employer

We're proud to have achieved a number of awards and accreditations in recognition of our industry-leading capabilities. We also hold memberships and partnerships with several industry bodies which demonstrate our commitment to sustainability, health & safety and social value. 


Best Companies Outstanding Organisation (2 star accreditation)

Disability Confident

EcoVadis - 2022 Gold status Sustainability rating

ISG has been awarded gold status accreditation by EcoVadis, putting us in the top 5% of our industry when it comes to our environmental, social and ethical impact.

Planet Mark

Year 3 certified business - This is to certify that ISG has achieved the Planet Mark by reporting a reduction in its carbon footprint using the emissions banking approach and engaging its stakeholders. 

The 5% Club 2023-24 Employer Audit Scheme - Gold accredited membership


Armed Forces Covenant - Employer Recognition Scheme - Gold Award 2023

Best Companies - Top 25 Best Big Companies to work for 2023

BPIC - Black Professional in Construction 2021 (Best Inclusion and Innovation and Best Industry Contractor)

The Job Crowd Top Company for Apprentices to work for 2022/23 Construction and Civil Engineering - Winner

The Job crowd Top Company for Graduates to work for 2022/23

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