Lawyers have questioned how Sue Gray's report could prejudice a police inquiry as fears mount that the Downing Street partygate probe could be delayed or watered down.
The Metropolitan Police asked the top civil servant to make "minimal references" to the parties it is investigating in her report to avoid prejudicing its inquiry.
Scotland Yard is looking at "a number of events" in Downing Street and Whitehall during the pandemic - but the force has not specified which ones.
