Christmas Shoppers many already wearing masks walk past a 'Stay Safe' sign in Regent Street, London as a new Covid-19 variant Omicron is detected in England after the WHO named it a variant of concern which may evade vaccines. Earlier, Prime Minister Boris Johnson announced that face masks must now be warn again in shops and all travellers arriving in England must take a PCR test and self-isolate. ? Alex Lentati / eyevine

Christmas Shoppers many already wearing masks shop in Oxford Street, London as a new Covid-19 variant Omicron is detected in England after the WHO named it a variant of concern which may evade vaccines. Earlier, Prime Minister Boris Johnson announced that face masks must now be warn again in shops and all travellers arriving in England must take a PCR test and self-isolate. ? Alex Lentati / eyevine

Christmas Shoppers many already wearing masks shop in Regent Street, London as a new Covid-19 variant Omicron is detected in England after the WHO named it a variant of concern which may evade vaccines. Earlier, Prime Minister Boris Johnson announced that face masks must now be warn again in shops and all travellers arriving in England must take a PCR test and self-isolate. ? Alex Lentati / eyevine