Arrivals in the UK from most countries must self-isolate for two weeks in a bid to curb the spread of the coronavirus pandemic.
There is, however, an ever-changing number of exceptions to this rule, where regions record lower infection rates.
This group of countries, territories and regions known as the travel corridor list is updated on a weekly basis.
From 4am on Sunday the list will welcome some popular new additions, so which countries are now exempt from the quarantine rules? And where can Britons travel without facing 14 days at home?
Travellers arriving in the UK from those places after 4am on Sunday will no longer need to self-isolate for 14 days.
This could lead to a surge of bookings for October half-term breaks and holidaymakers seeking winter sun.
Tui, the UK’s largest travel firm, announced it would resume flights to the Canary Islands from Saturday.
Were any countries removed from the safe list?
Yes. Lichtenstein was the only country to lose its quarantine exemption this week.
It will be removed from the safe list at 4am on October 25.
So where can I now go without quarantining?
There are separate lists for Wales, Scotland and Northern Ireland. Links to these are provided on the Department for Transport website, which you can access here.
The full list of travel corridors for England is now as follows:
Akrotiri and Dhekelia
Antigua and Barbuda
British Antarctic Territory
British Indian Ocean Territory
British Virgin Islands
the Canary Islands (will be added to the list 4am Sunday 25 October)
the Channel Islands
Denmark (will be added to the list 4am Sunday 25 October)
if you arrive in England from Mykonos before 4am on October 25 you will need to self-isolate
if you arrived in England from Crete before 4am on October 18 you will need to self-isolate
if you arrived in England from the islands of Lesvos, Santorini, Serifos, Tinos or Zakynthos before 4am on October 10 you will need to self-isolate
the Isle of Man
Liechtenstein (will be removed from the list 4am Sunday 25 October)
Maldives (will be added to the list 4am Sunday 25 October)
Pitcairn, Henderson, Ducie and Oeno Islands
South Georgia and the South Sandwich Islands
St Helena, Ascension and Tristan da Cunha
St Kitts and Nevis
St Pierre and Miquelon
St Vincent and the Grenadines
All Britons are reminded they will still need to complete a passenger locator form before travelling.
The Foreign Office (FCDO) advises against non-essential international travel at this time, except to travel corridor countries that are deemed as “not posing an unacceptably high risk to British travellers”.
Those who decide to travel to a country after a quarantine rule has come into force will have to self-isolate for two weeks on their return.
The FCDO says travellers should keep up to date with the latest travel advice, know the risks of heading to other countries, and be aware of their local entry rules and measures.
What happens if I do not quarantine after returning from a country not on the travel corridor list?
Penalties for those breaching the self-isolation rules have increased from £1,000 for a first offence up to £10,000 for subsequent offences.