London and parts of south-east England head into tier 3, while two major medical journals call on the government to scrap a planned relaxation of restrictions over Christmas.

Angela Crawley, SNP MP for Lanark and Hamilton East, tells Bloomberg Westminster's Roger Hearing and Sebastian Salek why encouraging caution is enough.

Plus, is cleaner air an upshot from the pandemic? Not according to the Centre for Cities. Policy officer Simon Jeffrey explains how to bring down virus-induced pollution levels.

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