Jim Robinson's one-man play, Just Not Fair, is being staged by Vanessa and Corin Redgrave at the Chelsea Centre, west London, on Sunday. He said writing had proved therapeutic, "a purging of a lot of feelings and emotions".
Mr Redgrave, who first met Mr Robinson in 1993 when he visited him in prison, described him as fascinating and delightful. He said of Just Not Fair: "It's an extraordinarily personal and truthful account. Although there is pain, there is also a lot of humour."