The Balearic Islands, Malta, the Portuguese archipelago of Madeira and Barbados are among the places added to the green list for travellers from the UK.
Transport secretary, Grant Shapps, confirmed people entering the UK from these destinations will not have to quarantine from 04:00 on Tuesday.
Shapps also confirmed there were plans to allow quarantine-free travel from amber list countries for people who were fully vaccinated.
However, the prospect of European holidays could face another hurdle after German chancellor, Angela Merkel, earlier suggested all EU countries should make British travellers quarantine on arrival to slow the spread of the Delta variant.
Also added to the green list are Anguilla, Antigua & Barbuda, the Balearic Islands (which include Ibiza, Menorca, Majorca and Formentera), Bermuda, British Virgin Islands, Cayman Islands, Dominica, Grenada, Montserrat and Turks & Caicos Islands.
The full list can be seen here.
Following the news, Javier Piñanes, director of the Spanish Tourist Office, said: “We are delighted that the Balearic Islands has been added to the UK’s green list for travel meaning that British travellers will be able to visit the archipelago without the requirement of quarantine on their return to the UK….