The falling number of coronavirus cases and deaths has led to the biggest easing yet of the lockdown.
Boris Johnson told the House of Commons that, as long as certain health and safety guidelines are met, many businesses will be able to welcome customers inside for the first time in months.
Restaurants and pubs can reopen with table service only and minimal contact between staff and customers.
Hairdressers can reopen, as can leisure centres, places of worship and tourist attractions.
Weddings can be held again - but with a limit of 30 guests.
This has been made possible by a relaxing of the two metre rule in places where it is not possible to stay that far apart.
The only places left closed include nightclubs, soft play areas, indoor gyms, swimming pools, spas, bowling alleys and water parks.
Mr Johnson said: "Our long national hibernation is beginning to come to an end. A new but cautious optimism is palpable."