UK’s green list update will be ‘cautious’, insiders warn

List will be reassessed by 28 June but sources do not expect rapid growth as Delta variant cases rise

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Holidaymakers should not pin their hopes on a slew of extra countries being added to the quarantine-free green list when it is updated later this month, government sources have warned.

With ministers monitoring data daily on the spread of the Delta variant, after stage four of the reopening roadmap was postponed by a month to 19 July, Whitehall insiders say the mood remains extremely cautious.