Bowling alleys, skating rinks, casinos, beauty salons and tattoo studios will be allowed to reopen in England this weekend.
From Saturday August 15, socially distanced audiences will be allowed back into indoor venues, while wedding receptions of up to 30 people will also be permitted.
Boris Johnson said: “Today, we are able to announce some further changes which will allow more people to return to work and the public to get back to more of the things they have missed.
“However, as I have always said, we will not hesitate to put on the brakes if required, or to continue to implement local measures to help to control the spread of the virus.”
The Mirror reports the gradual relaxation of curbs was dramatically halted two weeks ago as number crunchers at the Office for National Statistics “expressed concerns about a slight increase in the number of people in England testing positive” for Covid-19, Downing Street said.
It added: “The situation now appears to have levelled off.”
The lifting of curbs – which will see snooker fans return to the World Snooker Championship at Sheffield’s Crucible Theatre this weekend – will not apply in areas of Greater Manchester, Lancashire and West Yorkshire dealing with a surge in cases.
The announcement came within half an hour of the UK placing France and the Netherlands on the quarantine list - meaning from Saturday tourists returning from those countries will have to self-isolate for two weeks.
The Government hopes to reopen “competition venues” for sports fans, with social distancing measures in place from October 1.
Business events and conferences will be allowed from the same date if rates of infection remain at or below current levels.
All staff offering close contact services, including hairdressers, should now wear a type 2 surgical face mask, as well as clear visors that cover their face.
The announcement on fresh lockdown relaxations came as No10 launched a fresh crackdown on people who repeatedly flout face covering rules.
Masks must be worn in shops, takeaways and on public transport.
Fines for people repeatedly caught breaking the rules will double to a maximum of £3,200 for serial offenders in the coming weeks.
And there will be new financial penalties for people hosting raves or other unlawful gatherings of more than 30 people, amid a surge in lockdown and block parties.
Mr Johnson added: “Most people in this country are following the rules and doing their bit to control the virus, but we must remain focused and we cannot be complacent.
“That is why we are strengthening the enforcement powers available to use against those who repeatedly flout the rules.
“At every stage I have said our plan to reopen society and the economy is conditional and that it relies on continued progress against the virus.”
Home Secretary Priti Patel said:“Coronavirus remains a real and present threat to all of us and the majority of the British public are doing the right thing.
“I will not stand by and see these sacrifices undermined by a small minority of senseless individuals.
“These measures send a clear message – if you don’t cooperate with the police and if you put our health at risk, action will follow.”