Spy Gareth Williams, whose body was found in a holdall in Pimlico, probably died alone in an accident. Met Police said today they disagree with the conclusion of a coroner last year that the codebreaker was probably killed unlawfully.
Deputy Assistant Commissioner Martin Hewitt said: "With the conclusion of the investigation, the Metropolitan Police's position is that, on balance, it is a more probable conclusion that there was no other person present when Gareth died.
"But the reality is that for both hypotheses there exist evidential contradictions and gaps in our understanding."
More top news
Detectives investigating an assault in Newham have released CCTV footage in a bid to identify the two suspects who attacked a 23-year-old.
Concern is growing for the welfare of a 28-year-old woman who has not been seen for more than two weeks.
A police officer in today's London Pride parade surprised his partner by proposing in the middle of the parade.