Malta, Madeira and SLOTXO the Balearic Islands are among the holiday destinations to be added to the government's green list for travel.
Travellers will no longer have to self-isolate on their return to the UK from these places.
But you should check entry rules for each country.
For example, mainland Portugal now requires tourists to show proof of being fully-vaccinated to avoid two-weeks' quarantine upon arrival. And from 30 June, only full-vaccinated UK adults will be allowed entry to Malta.
What are the changes to the green list and what is the watchlist?
From 04:00 on Wednesday 30 June, a number of countries and territories will be added to the government's green list.
Malta, Madeira, and the Balearic Islands are joined by a number of UK overseas territories. These include Bermuda, the Cayman Islands, and Montserrat, and Caribbean Islands including Antigua, Barbuda, Dominica, Barbados and Grenada.
However all these additions - apart from Malta - will be on the "green watchlist", which means that they are at risk of being moved to the amber list. Israel has also been moved to the green watchlist.
Can I avoid quarantine if I've had both jabs?
The government had expressed hopes to scrap quarantine for people travelling back from amber list countries, who have had both Covid jabs.
Announcing the latest changes, the Department for Transport said this would happen "later in the summer", with further announcements next month.