Head of MI6 whose achievements included bringing the double agent Oleg Gordievsky out of the Soviet Union
This week's big questions are answered by political campaigner Peter Tatchell
First night: Aldwych theatre, London
The secret services were aware of both Michael Adebolajo and Michael Adebowale
Radical plans created by Britain’s security services will see school leavers recruited as “trainee spies” to form a new generation of espionage experts.
MP receives fees from US intelligence firm while holding security positions in Parliament
Well-known guest editors taking over BBC's Today show is a Christmas tradition – an escape from the 24-hour news cycle. But the scheme may have had its time, says Ian Burrell
They’ll just be promoting their pet schemes and ideas - not editing in any real sense
Editor to appear before Commons home affairs select committee following warnings from British security chiefs that revelations were damaging national security
Old Bailey judge has issued a warrant for 27-year-old
A former cabinet minister has said that politicians did have a "broad understanding" of British spies' massive snooping operations before they were revealed in the Edward Snowden leaks.
Anonymity lifted as it emerges he used a sharp object to cut away security tag before escape
Former US Secretary of State Hilary Clinton has called for a “sensible adult conversation” on the boundaries of state surveillance that were revealed by whistle-blower Edward Snowden, who leaked secret NSA files earlier this year.
The political row over whether revealing secrets behind GCHQ was a ‘public service’ or ‘gift to terrorists’ continues
Politicians, supermodels and sports stars will be blitzing state schools next week in the hope of passing on some of their tips for success to the next generation.
His comments follow those earlier this week from Andrew Parker, the new head of MI5, who launched a scathing attack on the leaks