The gangland executions, also known as the Rettendon Murders or the Range Rover Murders, inspired the 2000 film Essex Boys, starring Sean Bean, as well as The Rise Of The Footsoldier franchise.
The men were shot dead at point-blank range in a Range Rover on an isolated farm track at Rettendon, Essex, in December 1995 in what prosecutors said was a row over a drug deal.
One of the men convicted of the notorious "Essex Boys" murders will be released from prison on licence after 27 years, the Parole Board has said.
Michael Steele, who is now in his 80s, was jailed for life in 1998 alongside Jack Whomes at the Old Bailey for the murders of Patrick Tate, 37, Tony Tucker, 38, and Craig Rolfe, 26.
Steele and Whomes maintained their innocence following their convictions, based in part on the evidence of "supergrass" Darren Nicholls, who said he had been the getaway driver.
