Apart from two brief periods of freedom – from 1987 to 1988 and from 1992 to 1993 – he has been in prison ever since. Bronson’s term was extended to life in prison due to his dangerous behavior, including assaults on inmates and prison staff. He has spent a lot of time in prison in solitary confinement. The inmate, who is now known as Charles Salvador, is now campaigning to have his next parole hearing held in public, in what would be a first for Britain. Speaking from his cell at Woodhill Prison, Bronson said it was “absolute freedom” to still be behind bars. In an audio message to Sky News, he said: “I bet you can’t believe I’m still in, can you? “It’s absolute freedom. I’m 70 years old now, 70 years old. I have never murdered anyone, I have never raped anyone. “Why am I in prison? People don’t believe it. They think I’m a serial killer.” In a letter to Metro, he said the last 20 years of his sentence had been “nothing but revenge”. READ MORE: Charles Bronson’s brutal ‘prison hostage brag’ His lawyer Dean Kingham urged Justice Secretary Dominic Raab to grant Bronson a free pardon. Mr Kingham wrote in the letter: “You have the power under the prerogative of Mercy to allow Mr Salvador to be released without requiring him to go before the Parole Board… he has not been violent for many years and his danger addressed mainly to prison administrators. “The evidence going back five years is clear that his risk of violence has declined significantly. “The argument is that if he could demonstrate that he is not violent in very high-risk situations in custody to staff, governors, etc. The public has never been as strict as it is on prison staff and administrators. DON’T MISS ‘Coming Home’ Excited Charles Bronson Has Parole Hearing ‘In June [INSIGHT]Bronson’s joy as he is freed from the prison boss’s “attack”. [COMMENT]Charles Bronson whistled The Great Escape theme before the prison attack [INFO] “There is very good evidence from psychological research that as one gets older the risk of violence decreases. “As one approaches 70, the research shows the risk drops to zero. Now, it’s at that age.” Bronson will now apply again for parole after his legal team won a Supreme Court ruling to establish an inmate’s right to a public parole hearing. He added in his audio message: “I’m the first man in Britain to have a public one and the reason I’m doing this is I’m going to expose the system for what it’s done to me. “Everything comes out in the wash, my side of the story, and the truth is man, it’s going to shock the planet.” He added: “And between you and me I can still do 95 press-ups in 30 seconds, so I’m still the governor. Good luck, your old Charlie.” Bronson was first jailed for seven years in 1974, aged 22, for armed robbery. However, more time was added due to attacks on guards and fellow prisoners. He was first released in 1987, but soon returned to prison. In total, over 40 years have passed inside.