Ministers imposed the restrictions on Belgium after latest figures showed there are 27.8 new cases per 100,000 people compared to the UK’s 8.4.
When Spain was added to the quarantine list last month coronavirus cases were running at 27.4 cases per 100,000.
Ministers imposed the restrictions on Belgium after latest figures showed there are 27.8 new cases per 100,000 people
The measures were agreed by the UK Government and all devolved administrations following talks.
Despite some reports that France is also about to be added to quarantine countries for the UK, it is understood that there are no plans to take that country off the safe list.
Luxembourg was recently added to the quarantine list alongside Spain following a rise in cases there.
Senior government officials, such as those travelling from Brussels to London for Brexit talks, are likely to be exempt from the quarantine measure.
Change in level of confirmed cases
The Department for Transport said there had been a “significant change in both the level and pace of confirmed cases” in Belgium, Andorra and the Bahamas.
In Andorra, new cases per week have increased fivefold since the middle of July, while in the Bahamas there were 78.6 cases per 100,000 people last week, one of the highest figures and up from 3.1 in mid-July.
The Foreign Office has updated its travel advice to warn against all but essential travel to these three countries.
Britons currently in any of those countries should follow local rules and check UK government websites for further information.
Belgium’s prime minister Sophie Wilmes last week imposed new social distancing measures, limiting contacts outside every household to the same five people for a month, to avoid a more drastic national lockdown.
UK ministers sparked fury last month when they announced that holidaymakers returning from Spain would have to quarantine for 14