From 5th January 2021, people will only be allowed to leave their homes for the following reasons:
shop for basic necessities, for you or a vulnerable person.
go to work, or provide voluntary or charitable services, if you cannot reasonably do so from home.
exercise with your household (or support bubble) or one other person, this should be limited to once per day, and you should not travel outside your local area.
meet your support bubble or childcare bubble where necessary, but only if you are legally permitted to form one.
seek medical assistance or avoid injury, illness or risk of harm (including domestic abuse).
attend education or childcare - for those eligible.
For further information: