The coroner has indicated she is likely to give a narrative verdict on the death of seven-week-old Axel Peanberg King.
Dr Shirley Radcliffe told the inquest that she had been unable to find any evidence to suggest a "clear cause" of death.
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Five activists were arrested after staging a three-hour demonstration which forced the closure of a tunnel at Heathrow Airport.
Those vying to be named the new Met Police Commissioner will speak to the Home Secretary, London Mayor and Policing Minister.
Monday's temperature was recorded at Kew Gardens, west London, where visitors enjoyed temperatures 10 degrees warmer than Milan at 8C.