List of U3A Groups by Subject
| A Climate for Change | Walsall |
| About our climate ... | Belfast |
| Action for Climate Change NEW | Isles of Scilly |
| All Things Environment | Eastwood & District |
| Climate & Renewable Energy | East Suffolk |
| Climate Action | Bray Heads |
| Climate Change | Ambleside & District | Ayr | Bridgend | Bridlington | Chichester | Daventry and District | Farnham | Goring Gap | Gosport | Lewes | Lichfield | Merton | Odiham | Paddock Wood | Ramsey | Seaford | Taunton | Tetbury | Thameside (Wallingford) | West Bridgford | Weston-super-Mare | Woking |
| Climate Change & Environment | Droitwich |
| Climate Change & Sustainability | Bristol |
| Climate Change - Science and Society | North London |
| Climate Change Awareness | Norwood |
| Climate Change Discussion | Knutsford |
| Climate Change Learning & Action | Shoebury & Thorpe Bay |
| Climate Change Matters | Andover |
| Climate Change NEW | Brecon | Stourbridge |
| Climate Change and Environment | Barnet |
| Climate Change and Sustainability NEW | Bognor |
| Climate Control | Kings Norton |
| Climate Conversations | Church Stretton | Downham Market |
| Climate Crisis | Pembury | U3A Communities |
| Climate Emergency | Hampstead Garden Suburb | Kingston | Sutton | Teignmouth & District |
| Climate Matters | Dronfield & District |
| Climate Repair | Reading |
| Climate Solutions Discussion | Teesdale |
| Climate and Environment | Lymm & Thelwall |
| Climate/Energy Study | Stamford |
| Countdown to COP | Interest Groups Online |
| Earth Matters | Crawley |
| Eco Group | Prudhoe | South Woodham Ferrers | White Cliffs Country |
| Electric Vehicle Revolution | Kingsbridge Estuary |
| Energy & Climate Change | Skiddaw | U3A in London |
| Environment | Cheadle & Gatley | Faversham | Kings Lynn | Midhurst | Pocklington | Shoreham & Southwick | Tynedale | Wetherby |
| Environment & Climate Change | Newtown |
| Environment & Climate Crisis | Croydon |
| Environment - study & action | Worthing |
| Environment Forum | Ilkley |
| Environment Matters | Furness |
| Environment and Climate | Petersfield |
| Environment and Technology | Havant |
| Environment and Wildlife Conservation | Crewe & Nantwich |
| Environmental Awareness | Grange & District |
| Environmental Concern | Wyre Forest |
| Environmental Discussion | Carlisle |
| Environmental Group | East Berwickshire |
| Environmental Group NEW | Glens & Dalriada |
| Environmental Issues | Harborne & Edgbaston | Lancaster & Morecambe | Pershore | Wells |
| Environmental Studies | Caterham | Wokingham |
| Environmental Topics | Lymington |
| Gardening for Climate Change | Thanet |
| Green Conversation | Brighton & Hove |
| Green Issues | Isle of Wight | Islington |
| Greener Choices | Dorchester |
| Living Sustainably | Dulwich |
| Living with Climate Change NEW | Hillingdon |
| Our Environment | Washington Village |
| Saving Planet Earth | East Grinstead |
| Science Study | Halesworth |
| Sustainability | Chiltern | Harpenden | Porthcawl |
| Sustainability & Climate Change | Harrow |
| Sustainable Development | Sheffield |
| Sustainable Living | Bedale & District | Ruthin |
| Sustainable Planet | Malmesbury |
| What on Earth ...? | Stafford |
| u3a Climate Environment Actionists | Bath |