No one convicted for 1987 murder and force has previously said corrupt officers shielded the killers
The family of the murdered private detective Daniel Morgan are to sue the Metropolitan police for damages, alleging that a decades-long cover-up of corruption is continuing.
An official inquiry in June found that the Met commissioner, Cressida Dick, obstructed the panel appointed by the government to investigate claims that corruption blighted the hunt for Morgan’s killers and that the Met had failed to root it out.