In 1966, Harry Roberts was jailed for murdering three unarmed police offers in Shepard's Bush. Sgt Christopher Head, 30, and Det Con David Wombwell, 25, were shot by Roberts while his accomplice John Duddy killed PC Geoffrey Fox, 41.
The judge set his sentence at a minimum of thirty years. The 78 year old was released today after forty-eight years in prison.
The Met police foundation have described his release as "sickening" while the victims' relatives have condemned the move.
The case was widely reported at the time and was one of the highest profile murders in Britain in the 1960s.
James Banks discusses the response of the Met police foundation and the backlash to the release, as well as what's next for Harry Roberts.
There are problems expected for the authorities monitoring Roberts, especially after he has spent the majority of his life behind bars. Authorities have decided against giving him a new identity.