Join Us

The science says we must go to zero carbon emissions. The technology says we can. We need more changemakers – can you be one?

We’d love to welcome you as a CAT member. As a member you’ll join a community of over 7,000 people, who share a common goal to make the world more sustainable.


Membership options: Individual £30, Joint £36 and Family £40
Join today

Gift Membership

The perfect gift for anyone who cares about the environment
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Life Membership

Membership Options: Individual £300 and Joint £400
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Renew your Membership

Thank you for choosing to renew your CAT membership online. Your continued support is vital to our work.

Why become a member of CAT?

Our members tell us that grappling with the urgency of and scale of environmental issues, like climate change, can feel overwhelming and huge. Being part of CAT and a wider community of people who are working on positive solutions to environmental problems can help.

Becoming a member of CAT is a perfect way to help CAT continue its extensive educational work and ensure that we can plan the future with confidence.

We host the CAT Conference each year for CAT members, supporters and students. It’s a chance to get together, learn from each other and discuss real-life solutions to some of the most pressing environmental problems with like-minded people from across the UK and beyond.

“Interesting, enjoyable, varied gathering. Much better than any other conference!”

2018 delegate

“An energising and invigorating weekend”

Roger Thomas 2018

“It’s always inspiring to hear people from CAT talking. You’ve inspired us for decades.”

Eluned Morgan AM.

“I didn’t make my first visit until 1994… but have been a member ever since. A life-changer. Llongyfarchiadau! Congratulations!”


“My dad used to bring me in the 70s when I was little. I have taken my own children and always find inspiration and hope here.”

Jane Cousins

Members Conference wall of ideas

Contact Us

Need more information or some help? Don't hesitate to contact us and a member of our team will get back to you.