The reported attack had caused concern and prompted protests calling for more details from police.
The PM is facing calls to resign over the revelation that Lord Mandelson did not pass security checks.
The actor, known for his role in BBC police drama Hope Street, has died "peacefully at home".
Jade Lau said her partner David Parrish was "full of life, funny and loving" and that he was "buzzing" in the weeks leading up to the run.
Keir Starmer says it's 'staggering' he wasn’t told Mandelson failed security vetting.