Gordon Welchman was one of the original elite codebreakers crucial to the allies defeating the Nazis in World War II. He is the forgotten genius of Bletchley Park. Filmed extensively at Bletchley Park, the centre for codebreaking operations during World War II, this documentary features the abandoned buildings where thousands of people worked tirelessly to crack the codes. Post-war, Welchman moved to the US to be at the centre of the computer revolution. Recently released top secret documents reveal that the case of Gordon Welchman reached the desk of the British prime minister, Margaret Thatcher, and then led to questions being asked in the House of Commons after Welchman's untimely death. Welchman's legacy continues to this day. Welchman's pioneering work in the field of traffic analysis led directly to the modern secret surveillance state, and particularly the use of metadata - as revealed by whistleblower Edward Snowden.

The highs and lows of Alan Turing's life, tracking his extraordinary accomplishments, his government persecution through to his tragic death in 1954. In the last 18 months of his short life, Turing visited a psychiatrist, Dr. Franz Greenbaum, who tried to help him. Each therapy session in this drama documentary is based on real events. The conversations between Turing and Greenbaum explore the pivotal moments in his controversial life and examine the pressures that may have contributed to his early death. The film also includes the testimony of people who actually knew and remember Turing. Plus, this film features interviews with contemporary experts from the world of technology and high science including Apple co-founder Steve Wozniak. These contributors bring Turing's exciting impact up to the present day, explaining why, in many ways, modern technology has only just begun to explore the potential of Turing's ideas. Written by Patrick Sammon