A human rights barrister has said the Prime Minister could face thousands of pounds worth of fixed penalty notices for attending lockdown parties in No 10.
Detectives investigating the gatherings in Downing Street are to send out questionnaires to people believed to have taken part, Scotland Yard said on Wednesday.
Before the end of the week, officers from what has been named Operation Hillman will begin contacting more than 50 people thought to have been involved in events which are the subject of police inquiries.