Authorities in South Korea Monday announced it has detected three cases of the new COVID-19 strain.
The three victims were members of a London-based family who arrived in the country on December 22, the Korea Disease Control and Prevention Agency (KDCA) said in a statement.
The KDCA said they have been placed in isolation since testing positive for Covid-19 on arrival.
The new strain of the virus emerged earlier this month in Britain and has already spread to several European countries, as well as Canada, Jordan and Japan.
Last week London said another new variant of the virus was found in the country in cases linked to South Africa, which is the first African nation to record one million coronavirus cases.
South Korea was amongst several countries of the world which banned flights from the UK two weeks ago.
In addition, the country will make it mandatory for passengers travelling from Britain or South Africa to submit negative Covid-19 test results before departure, KDCA chief Jung Eun-kyeong said.
South Korea has recorded 57,680 COVID-19 cases with 819 deaths.