You should only leave the house for one of four reasons:

• Shopping for basic necessities, for example food and medicine, which must be as infrequent as possible.
• One form of exercise a day, for example a run, walk, or cycle - alone or with members of your household.
• Any medical need, or to provide care or to help a vulnerable person.
• Travelling to and from work, but only where this absolutely cannot be done from home.

Full guidance can be found at https://www.gov.uk/government/publications/full-guidance-on-staying-at-home-and-away-from-others/full-guidance-on-staying-at-home-and-away-from-others

Staying home will save lives!