Met to ask No 10 partygoers named by inquiry if they are guilty

Some could be questioned in writing and fined if they accept the findings, while others will be interviewed under caution

Police will ask aides of Boris Johnson who are named in Sue Gray's report as having attended parties during lockdown if they are guilty and thus accept a fine under regulations passed by the government they work for.

Some could be asked in writing to accept or dispute the findings from Gray, while others will have to be interviewed under caution. The investigation is expected to take at least several weeks, with detectives prepared to expand their inquiry if further evidence emerges.