The UK is now advising against all non-essential travel to the Balearic and Canary Islands after Spain recorded a rise in coronavirus cases.
Foreign Office guidance was changed on Monday to include both mainland Spain and islands such as Ibiza and Tenerife.
It came as a government source said talks were under way with Spain to provide a quarantine exemption for those arriving back from the islands.
A blanket quarantine policy for Spain began on the weekend.
A Foreign Office spokesman said the decision considered “the impact of the requirement to self-isolate on return to the UK”.
Speaking earlier, Boris Johnson’s official spokesman said “no travel is risk free during this pandemic”.