Carrie Johnson, the wife of Prime Minister Boris Johnson, is to be fined as part of the Met Police's investigation into the Partygate scandal, alongside her husband and the chancellor, Rishi Sunak.
She is to be fined for attending a party in Downing Street during lockdown.
A spokesperson for Mrs Johnson said: "In the interests of transparency, Mrs Johnson can confirm she has been notified that she will receive a Fixed Penalty Notice (FPN).