The UK Prime Minister, Boris Johnson has announced the nation in a live press conference following confirmed cases of the Omicron COVID variant here in the UK.
Anyone arriving in the UK will be asked to take a PCR test within 48 hours and must isolate until they receive a negative test.
Rules on face coverings will be tightened up in shops and public transport, with a review in three weeks.
If you have been in contact with someone who has tested positive with the Omicron variant, you must also isolate.