Great Big Green Week
Great Big Green Week 2026
Great Big Green Week is the UK’s biggest celebration of community action to tackle climate change and protect nature, when local groups come together to organise events aimed at improving sustainability and conserving the environment.
We’re taking part in the event for the third year in a row because we’ve set ambitious environmental targets, including to achieve net zero carbon emissions as an organisation by 2030, and we want to encourage others to take positive action on climate change.
This year, Great Big Green Week will return to Welwyn Hatfield on 6 to 14 June.
Activities
There will be a range of free, fun activities taking place throughout the week, including a bat walk, clothes swap, come and try bike sessions, a Chats for Change coffee morning and much more! Check the event calendar for full details.
Register an activity
If you're interested in hosting an activity, please register your event using our form. This helps us promote it and include it in our event calendar.