'Tier 5': England faces possible new Covid restrictions, source says

Experts warn tier 4 may not be enough to contain new, highly transmissible variant

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Further coronavirus restrictions could be introduced in England akin to a tier 5" lockdown, a government source has suggested, as experts warn the current curbs might not be enough to shrink the epidemic.

Tier 4 restrictions came into force in London and parts of the south-east and the east of England on 20 December and have since been extended to a swathe of the country, from Cambridgeshire to Sussex and parts of Hampshire.