Attendees of Sage meetings worried by presence of Cummings

Scientists on UK government's coronavirus advisory group say Dominic Cummings was an active participant

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The involvement of the prime minister's chief political adviser, Dominic Cummings, in meetings of the scientific group advising the UK government's response to the coronavirus has left other attendees shocked, concerned and worried for the impartiality of advice, the Guardian can reveal.

One attendee of the Scientific Advisory Group for Emergencies (Sage) said they felt Cummings' interventions had sometimes inappropriately influenced what is supposed to be an impartial scientific process.