Boris Johnson slapped with damning new Partygate evidence just hours before committee

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In messages between Downing Street and the then communication secretary Jack Doyle, it was revealed that officials were debating how best to defend the parties, one of which took place in Boris Johnson’s flat.

When a No 10 official alerted Jack Doyle to a media report about the parties, Mr Doyle admitted: “I don’t know what we say about the flat”.

The dossier of evidence also saw communications secretary Lee Cain raise concerns about one party, proposed by Boris Johnson’s principal private secretary Martin Reynolds.

Mr Cain says he raised concerns that the garden party in Downing Street would be a “communications risk”.