People arriving in England from countries including France, Spain, Germany and Italy will no longer need to quarantine from 10 July, the Department for Transport has confirmed.
A full list of exempt countries posing “a reduced risk” from coronavirus will be published on Friday.
Most travellers to the UK currently have to self-isolate for two weeks, BBC reported.
The Foreign Office is also changing its advice against all but essential travel to a number of countries from Saturday.
The quarantine restrictions came into force in early June, to try to prevent coronavirus being brought in at a time when infections in the UK were falling.
The new exemptions mean people arriving from selected destinations will be able to enter England without needing to self-isolate, unless they have been in or transited through non-exempt countries in the preceding 14 days.
About 60 countries are expected to be included.
However, the announcement did not guarantee reciprocal arrangements with foreign countries – meaning travellers from the UK may have to self-isolate on arrival there.