"Following the government announcement of a national lockdown [5 Jan 2021], we are all being asked to stay at home. Stricter and legally enforceable rules on outdoor activity are now in place. There are prescribed reasons for being outdoors, which do include provision of voluntary and charitable services and for the purposes of exercise (but only once a day).

However, it’s not clear from the government’s guidance whether volunteer litter picking, would be covered by either of these criteria. Therefore, taking a precautionary approach, we are asking all our volunteers to pause any organised litter picking events until further notice. Should you choose to pick up litter on your daily exercise, please ensure you do so safely and, in line with the latest government guidance, you should only undertake outdoor activity as an individual, with one other person or with members of your own household/support bubble, while maintaining social distancing at all times.

Thank you for your continued support and cooperation."

https://www.keepbritaintidy.org/.../coronavirus-guidance