Police were involved after one of six bullying or sexual misconduct complaints, the corporation says.
Downing Street says Boris Johnson was aware of "speculation" about Chris Pincher's alleged sexual misconduct.
An eyewitness describes seeing one man jump from a flat window to escape the fire.
More than a dozen are arrested as protesters urge a fuel duty cut by driving slowly across the country.
Labour has written to Boris Johnson demanding to know what he knew of the claims about Chris Pincher.