Royal Marine Alexander Blackman, who had his sentence reduced for shooting dead an injured Taliban fighter in Afghanistan, will be released from prison on Friday, the Justice For Marine A campaign group said.

Sergeant Alexander Blackman, known as Marine A in initial hearings, shot an injured Taliban fighter in Afghanistan. He was convicted of murder in 2013 and given a life sentence. In March 2017 he had his murder conviction reduced to manslaughter, with his sentence set at seven years.

He says: “I made a split second-mistake. I had been sent to a brutal battlefield to fight for my country in an unpopular war. And yet at the end of my trial, the Establishment lined up to portray me as an evil scumbag because it suited them to do so at the time.”