Belgium is suspending flight and train arrivals from Britain from midnight (2300 GMT) Sunday after the UK detected a coronavirus variant suspected to be more infectious, a government official told AFP.
Prime Minister Alexander De Croo told Belgian television channel VRT the ban will be in place for at least 24 hours.
The abrupt decision came a day after British Prime Minister Boris Johnson announced a lockdown for London and parts of southeast England to at least December 30.
He linked a surge in Covid-19 cases in those areas to the new strain of the coronavirus that he said could be up to 70 percent more infectious than the others seen so far.