| Aberdeen City | PLaN |
| Aberdeenshire Council | PLaN |
| Adur & Worthing | PLaN |
| Antrim and Newtownabbey BC | PLaN |
| Ashford Borough Council | Corporate |
| Belfast City Council | Corporate |
| Bermuda | International |
| Boston Borough Council | PLaN |
| Bournemouth, Christchurch and Poole (BCP) Council | PLaN |
| Bristol Port Health Authority | PLaN |
| Causeway Coast and Glens Borough Council | PLaN |
| City of Edinburgh Council | Corporate |
| Colchester Borough Council | PLaN |
| Comhairle nan Eilean Siar (Stornoway) | PLaN |
| Copeland Borough Council | PLaN |
| Derry City and Strabane DC | Corporate |
| Doncaster Council | PLaN |
| Dorset Council | Corporate |
| Dover District Council | Corporate |
| Dublin | International |
| Dumfries and Galloway Council | Corporate |
| Dundee City Council | Corporate |
| Falkirk Council | Corporate |
| Falklands Government | PLaN |
| FERA Science | Associate |
