Omicron: Sadiq Khan declares major incident in London

A major incident has been declared in London and more than 10,000 Omicron new cases have been found in the UK, as the variant surges across the country.

Sadiq Khan says it's important that Londoners understand how serious the surge in cases is.

More on this story: More than 10,000 new Omicron cases found in UK

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