Great Big Green Week

Great Big Green Week

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From 18 to 26 September, communities across the UK will join together for ‘Great Big Green Week’.

This will be the UK’s biggest ever event for climate and nature to help build momentum for COP26.

Thousands of grassroots events will celebrate how communities are taking action to tackle climate change and protect nature, to encourage others to get involved, and to show the groundswell of support for ambitious climate action.

The week is organised by The Climate Coalition, the UK’s largest network of organisations working on climate change, of which CAT is a member.

The Great Big Green Week logo

CAT events

CAT will be running events online and in our eco centre as part of the week, including a free webinar with leading climate scientist Professor Kevin Anderson on 22 September.

Hosted by our Zero Carbon Britain team, the event will offer an honest overview of current climate science, suggestions for policy and key goals for negotiations at COP26, and provide an overview of CAT’s work helping communities and councils take effective action on the climate emergency.

At our eco centre, we’ll be hosting events and activities for visitors and the local community.

Invite your MP

The Climate Coalition are urging as many people as possible to meet with their MPs during Great Big Green Week to let them know how much we care about the climate and biodiversity emergency and to push for ambitious action in the run up to and during COP26.

Using a simple template, you can email your MP to let them know what climate commitments you’d like to see and to ask them to meet with you.

Find out more

Keep an eye on and sign up to our emails to keep up to date with Great Big Green Week and what’s coming up at CAT.

Visit to see what’s happening in your area and for advice on planning your own event.

If you’re in Scotland, you can get involved in Great Big Green Week via the Climate Fringe Week, hosted by Stop Climate Chaos Scotland.

Email sign up

Keep up to date with all the latest activities, events and online resources by signing up to our emails and following us on social media. And if you'd like to get involved and support our work, we'd love to welcome you as a CAT member.