Travellers from more than 50 countries including France, Italy and Spain can stop self-isolating on arrival in England from July 10, the UK government has confirmed.
Scotland, Wales and Northern Ireland will each announce their own separate rules depending on how they work in England.
Transport Secretary Grant Shapps said the change, which reverses a two-week quarantine policy imposed in June, would lead to the “reopening of the nation”.
Under the new rules, a traffic-light system — red, amber and green — would be used for different countries depending on their prevalence of the coronavirus.
Travellers from the green and amber countries will no longer have to self-isolate on arrival.
The amber countries will have reciprocal arrangements in place with England, while the green countries are deemed to be safer than England, such as New Zealand. The amber countries include France, Italy and Spain.
The government had hoped to introduce the system across all four UK nations, but a political row has left England going it alone.
“Today marks the next step in carefully reopening our great nation,” said Shapps.
“Whether you are a holidaymaker ready to travel abroad or a business eager to open your doors again, this is good news for British people and great news for British businesses.”
People arriving in England would still have to fill out a locator form, he added.