Bulgaria has been added to England's green list, meaning that anyone arriving from Bulgaria in England after 4am on July 19 will no longer need to self-isolate for 10 days.
Other countries moved onto the quarantine-free lists include Hong Kong on the green list, and Croatia and Taiwan on the 'green watchlist'. (The latter essentially means that these are still at more of a risk of being moved back to amber).
Bulgaria has long been a favourite with Brits after cheap and sunny summer holidays, with the country's Sunny Beach resort particularly popular.
The good news for sun-starved holidaymakers is that currently, Bulgaria is open to Brits regardless of their vaccination status - and there's no quarantine on arrival.
However, you will still need to meet certain entry requirements.
Those who are fully vaccinated will need to show proof of a vaccination being completed at least 14 days before arrival.
For those who aren't yet double jabbed, you'll need to show a negative PCR test result taken within 72 hours of arrival into the country. Rapid antigen tests will also be accepted, although these will need to be taken within 48 hours of arrival.
Bulgaria is also open to those who can prove they have recovered from Covid-19, such as a PCR or rapid antigen test with a positive result, which must be dated between 11-180 days before arrival.
Travel restrictions and entry requirements can change quickly during the pandemic. Always check the latest Foreign Office travel advice before planning, booking or going on a trip.
The latest changes to the traffic lights system in England came with a blow for holidaymakers as the Balearic Islands were moved back to the amber list, just a few weeks after having been placed on the green watchlist.
The Department of Transport says that the decision was made "due to a sharp rise in the number of cases", adding that "since the last traffic light review, the case rate has more than doubled in the Balearics".
It's worth noting that from July 19, Brits who are fully vaccinated against Covid won't be required to self-isolate when back in the UK from an amber country. However, Brits who are not fully jabbed and have booked a holiday will need to self-isolate.
Most travel firms including the likes of TUI and easyJet allow holidaymakers to amend their trips free of charge at the moment in the event of a country being moved to the amber list - check your booking policy for further details.
Nigel Thompson, Travel Editor, says: "Just when you thought it was safe to go back into the Mediterranean water…
"Here we go yet again with another Shapps o’clock holiday hokey cokey as the Balearic Islands last just a ridiculous and frustrating couple of weeks on the Government’s Covid travel green list and go amber.
"Not such bad news for the older double jabbed Brits - but perhaps for younger families heading to Majorca, Menorca and Ibiza after July 19 who are unvaccinated, or have only had their first jab, it’s potentially a huge hassle as they face the inconvenience of an unplanned home quarantine when they return to the UK.
"Still, every cloud…it’s nice to see Adriatic favourite Croatia move to the green watchlist and bargain basement Bulgaria is back in the getaway game on green, as is Hong Kong, where many Brits have family they will be desperate to see as soon as entry is permitted.
''As always, consumer confidence is everything in travel and the Balearics news is a setback as we reach the summer peak season.
''Yes, the vaccination programme is a triumph and slowly liberating travel, but holidaymakers and the UK industry desperately need more clarity and a visibly coherent strategy from the Government, not these messy, sporadic and confusing policy updates on Twitter.''
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