Mr Smiley: My Last Pill and Testament

Banged Up Abroad: Hellhole: Our Fight to Survive South America's Deadliest Jail

Howard Marks' Book Of Dope Stories

The Cocaine Diaries: A Venezuelan Prison Nightmare

Senor Nice: Straight Life from Wales to South America

The Damage Done: Twelve Years Of Hell In A Bangkok Prison

Two Dragons

Mr Nice & Mrs Marks: - Adventures with Howard

Orange Is the New Black: My Year in a Women's Prison

Public Executions: From Ancient Rome to the Present Day

KL: A History of the Nazi Concentration Camps

Killing Time: Surviving Dubai's Most Notorious Prisons

Borstal Boy

Traitors of the Tower

The Hot House: Life Inside Leavenworth Prison

The Lone Brit on 13: A Prisoner's Hell in Spain's Toughest Jail

The Sun Does Shine: How I Found Life and Freedom on Death Row (Oprah's Book Club Selection)

Inside Alcatraz: The bestselling true story of life inside America's most notorious prison

In the Shadow of Papillon: Seven Years of Hell in Venezuela's Prison System