As of December 14, travellers entering the United Kingdom from Bulgaria, both UK nationals and foreign citizens, are expected to undergo a period of 10-day self-isolation (previously 14 days), unless they fall into one of the exempt categories, the British embassy in Sofia said.
As of December 15, passengers arriving in England from Bulgaria and other countries outside those designated as “travel corridors” will have the option of paying to take a private Covid-19 test after five days of self-isolation in England. This measure does not apply for Scotland, Wales, and Northern Ireland.
A negative result will absolve the passenger from the requirement to self-isolate for the remainder of the 10 days quarantine period. Since December 5 2020, a specific and limited Business Jobs and Investment Exemption from the quarantine rules in England has to come into force.