The government has announced that face coverings will be mandatory in shops, supermarkets, banks, building societies, post offices and other enclosed spaces from 24 July 2020.
It will also be compulsory to wear a face covering when buying food and drink to take away from cafes and shops. If you are in a premises where you are able to sit down and consume food or drink that you have bought, then you can remove your face covering in order to eat and drink on-site.
Under the new rules, people who do not wear a face covering will face a fine of up to £100, in line with the sanction on public transport and just as with public transport, children under 11 and those with certain disabilities will be exempt.
The liability for wearing a face covering lies with the individual.
Should an individual without an exemption refuse to wear a face covering, a shop can refuse them entry and can call the police. The police have formal enforcement powers and can issue a fine. This is in line with how shops would normally manage their customers and enforcement is of course a last resort.