a greener

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iiE is a membership accreditation scheme for organisations

We provide you with everything you need get traction and celebrate your milestones – helping you plan for net zero carbon emissions and engage with projects that protect nature. Understand your environmental impact, take action, and demonstrate progress by working through the iiE accreditation framework.

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How does it work?

Find out how you can achieve environmental certification for your company

What is IIE?
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Who is it for?

Discover how iiE works with organisations of all industries and sizes

Who is it for?
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What are the benefits?

Check out why becoming an iiE member will make you a more sustainable business

What are the benefits

Planning to Go Green


For small organisations just getting started on their green journey. This level leads to accreditation, but you must upgrade to submit for accreditation

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For small organisations on their green journey who are committed to accreditation

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Medium sized businesses and those needing additional support for 3 or more sites

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Large or corporate organisations with multiple sites and complex needs

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*Fees exclude VAT and are chargeable annually


Not ready to sign-up for environmental accreditation? Discover our free resources here to improve your green credentials

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Working with organisations of all sizes across the public and private sectors

Beyond accreditation - Discover our consultancy services

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What our members say

iiE have provided us with invaluable support and guidance over the past 6 years. We are so grateful to them for sharing their ideas and enthusiasm to help us reduce our impact on the environment and save money, while at the same time having fun taking part in various events and activities. Thank you to all the team!

Hunt & Coombs Solicitors

It allows me to tailor the metrics and therefore the EMS to those aspects that are important and relevant to us – either due to environmental impact, or due to the engagement impact with staff…. Also important is the low administration burden.

Facilities Manager, Northampton General Hospital

It’s really gratifying when the work we as a Council have put in is recognised and we can demonstrate to others in the City the benefit of both monitoring and taking action of your environmental impact as well as the iiE approach to a management system as well.

Climate Change Manager, Hull City Council

A number of years on from the original vision large savings have been realised by doing the right thing and sometimes the obvious. Investors in the Environment gave the college the focus and impetus to collect and quantify everything that was happening throughout the college community.

Hull College

We can all make a difference at a time when action on climate change is most needed. As we work towards iiE’s top level Green accreditation, we are keen to share our growing experience and knowledge on sustainability to help inspire and support other practices in any way we can.

E. West, Davies Veterinary Specialists

iiE’s thorough resources take you through the process step-by-step, making it accessible and achievable, and their friendly team has been extremely helpful in responding to our queries. Organisations need help to understand and take action on environmental issues, and iiE’s work provides a vital bridge to enable them to do so.

Sustainability Projects & Education Lead, Change Agents

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