Police are contacting partygate 'suspects' after being handed a dossier of evidence by Sue Gray.
Scotland Yard said people accused of breaking Covid rules at parties held in Number 10 and across Whitehall, would have to provide a "reasonable excuse" or face a fine.
Commander Catherine Roper, who leads the Met’s Central Specialist Crime Command, said: "If the decision is to take enforcement action then a report will be sent to the ACRO Criminal Records Office which will issue the fixed penalty notice.
