The following information is taken from the following website: https://www.gov.uk/government/publications
What activities and out-of-school clubs can my child attend?
Providers who run community activities, holiday clubs, after-school clubs, tuition and other out-of-school provision for children can now operate with protective measures in place. Children are able to attend settings such as tuition and learning centres, many types of extracurricular clubs (e.g. dance classes, gymnastics training, football coaching), uniformed youth organisations (e.g. Scouts, Guides and cadet forces), supplementary schools, private language schools and religious settings offering education (for example madrassahs, yeshivas, and Sunday schools), provided they are only operating in premises legally able to be open.[…]
We are recommending that providers, as far as possible, keep children in small groups of no more than 15 children with the same children each time wherever possible (ie do not mix groups unless absolutely necessary) and at least one staff member, depending on the type of provision or size of the group. Group sizes may need to be smaller than 15 children depending on a number of factors such as age of the children in attendance, size of the premises or the type of activity. This means that when your child attends the first session they should be placed in a particular group or class of children and they should remain in that group for future sessions as far as possible.