The Health Protection (Coronavirus, Restrictions) (England) (No.3) Regulations 2020 came into force on 18 July 2020. These regulations give local authorities powers to issue directions imposing prohibitions, requirements or restrictions in relation to the holding of indoor and outside events as well as the use of outdoor spaces in its area.
The Council may therefore prohibit an event or require additional measures or restrictions if they are satisfied that there is a serious and imminent threat to public health and it is necessary and proportionate to prevent and protect against controlling spread of infection of coronavirus in the area. Events and infection control data in the local area will be kept under constant review and any event may be subject to these measures up to and including the day of the proposed event if at the time, the infection rate is such that to continue to hold the event would pose an imminent threat to public health.
There's a range of advice and support available if you want to run a community event: