This Cabinet Office document has been updated to include a summary of changes to the rules from 29 March.
From 29 March:
You will be able to meet outdoors either in a group of 6 (from any number of households), or in a group of any size from up to 2 households (each household can include existing support bubbles, if eligible).
You will be able to take part in formally organised outdoor sports with any number of people (outdoor sports venues and facilities will be able to reopen).
Childcare and supervised activities will be allowed outdoors for all children.
Formally organised parent and child groups will be able to take place outdoors for up to 15 attendees. Children under 5 will not be counted in this number.
From 1 April, those who have been identified as clinically extremely vulnerable will no longer be advised to shield. However, they should continue to take extra precautions to protect yourself. It is important that you continue to keep the number of social interactions that you have low and try to limit the amount of time you spend in settings where you are unable to maintain social distancing.
The full guidance is available here.
Cabinet Office March 2021