April 12 also sees the return of staycations, with members of the same household allowed to stay in self-catering accommodation.
However, Britons will have to wait until May 17 before they are allowed to meet indoors.
From May 17, two households or six people are permitted to meet indoors.
Also from this date, pubs, restaurants and other hospitality venues are allowed to seat customers indoors.
Hotels, BnBs and hostels can also reopen from May 17, and indoor venues like museums, theatres, cinemas and play areas can open their doors.