Accreditations and awards
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.
Accreditations
Best Companies Outstanding Organisation (2 star accreditation)
Building Confidence (Achilles)
This now includes certification to the new Common Assessment Standard (CAS) which has been introduced by BuildUK to standardise the prequalification systems for our clients.
Cyber Essentials (Certified Plus)
Disability Confident
EcoVadis - 2023 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.
ISO 14001:2015 Environmental Management System
ISO 19650::2018 BIM
ISO 9001:2015 Quality
ISO 45001:2018 - Health & Safety
JOSCAR - Registered supplier
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
Awards
Armed Forces Covenant - Employer Recognition Scheme - Gold Award 2023
Best Companies - Top 25 Best Big Companies to work for 2022
BPIC - Black Professional in Construction 2021 (Best Inclusion and Innovation and Best Industry Contractor)
British Safety Council - International Safety Awards 2022 (Distinction Winners)
Building awards 2022 - "Delivering Social Value" Award
SEMH Manchester school programme
Building Awards 2022 - Major Contractor of the Year (turnover over £500m)
The City of London’s Considerate Contractor Scheme (CCS) Awards - 3 Gold awards
160 QVS (UK fit out)
Northcliffe House (UK fit out)
Millennium Bridge House project (UK construction)
Education Estates Awards 2020 - (Contractor of the Year)
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
NWRCA (North West Regional Construction Awards) 2022 - Net Zero Award
WINNER: Chester Community Fire Station – Cheshire Fire Authority (ISG)
Planet Mark awards 2022 (Sustainability Stakeholder Engagement award)
Memberships and partnerships
British Safety Council
BSRIA (Building Services Research & Information Association)
CHAS (Elite)
CIBSE (Chartered Institution of Building Services Engineers)
Considerate Constructors Scheme - founder member
Construction Innovation Hub
London Business Climate Leaders Group
The National Social Value Taskforce
RoSPA
Social Enterprise UK
UKGBC Advancing Net Zero Programme
UKSPA - Affiliate Membership
UKGBC Circular Economy programme founding sponsors
UKGBC - Commercial Retrofit Task Group
UKGBC Resilience & Nature-Based Solutions Programme
