The FCO now advises against all but essential travel to mainland Spain, amid fears the country is on the brink of a deadly second wave of coronavirus.
This means Brits should not go on holiday to mainland Spain under any circumstances.
The government has also removed Spain from its quarantine-free travel list, meaning anyone coming into the UK from any part of Spain will have to self-isolate for 14 days.
The change in FCO advice means you should not go on holiday to mainland Spain (even if your flights are still going ahead) but it does not cover the Spanish islands.
This means that, as long as you're prepared to quarantine when you get back, you can still go on holiday to either the Canary or Balearic Islands.
Here's what you need to know:
Where in Spain can you still go?
As per the FCO advice, you can still go on holiday to the Canary Islands or the Balearic Islands.
Only mainland Spain is considered dangerous, so your travel insurance should still cover you in Gran Canaria, Mallorca, Menorca, Ibiza, Tenerife, Lanzarote, Fuerteventura, Formentera, La Gomera or La Palma.
Many airlines are still operating flights to these destinations.
You can also visit the smaller Canary Islands: Graciosa, El Hierro, Lobos Island or Alegranza.
Do you still have to quarantine?
If you go on holiday to any of the Spanish islands, you will still have to quarantine when you get back.
This is because the government's rule on quarantine is separate from the FCO travel advice.
Travellers returning from any part of Spain - including the islands - will have to self-isolate for 14 days, or face a £1,000 fine.
This means you should only go to the Canary or Balearic Islands if you are sure you can commit to two weeks quarantine when you get home.
Can I cancel my holiday?
If you want to cancel a holiday to the Spanish islands because you cannot quarantine when you get back, you should get in touch with your provider to see what they are offering.
Some airlines, including TUI and EasyJet, are giving customers the opportunity to move their booking without paying a fee.
Unfortunately you may find you are not covered by travel insurance, as it counts as a "disinclination to travel".
