Great Big Green Week 2026

GBGW taking part 2026

Join us for Great Big Green Week 2026!

Great Big Green Week is the UK’s biggest celebration of action on climate change and nature, bringing together communities across the country to take part in practical, positive action.

There’ll be lots of free activities happening across the borough, such as pond dipping, clothes swaps and more. If you’re holding an activity, you can register it with us here.

Date: 6th June 2026.

Location: Welwyn Hatfield Borough

Cost: Free