Synagogues have stepped up security while communities were warned to 'avoid displaying Jewish or Israeli symbols in public ...

Secret information hidden in this toilet was collected periodically by Harry Houghton. In 1961 he was sentenced to 15 years imprisonment" ...

A GCHQ intern who endangered national security, risked exposing 17 colleagues, and "threw away" thousands of hours of work ...

Melita Norwood was the KGB's longest-serving female agent in Britain, until being exposed in 1992 by legendary defector ...

Manchester University computer science student Hasaan Arshad, 25, pleaded guilty to an offence under the Computer Misuse Act.

To the Northern Ireland Office, the Chief Constable of the PSNI Jon Boutcher has had the affrontery to challenge MI5’s veto ...

Rosalind Eleazar captures the grief hidden beneath MI5 outcast Louisa Guy’s steely exterior with a subtle and restrained ...

Jonathan Pryce on the 'great responsibility' of playing a character with dementia in 'Slow Horses.' The Oscar and Emmy ...

GCHQ, based from its famous “donut shaped” headquarters in Cheltenham and led by Anne Keast-Butler, tries to access, analyse ...

Conquest’s Second Law states that the behaviour of an organisation can best be predicted by assuming it’s controlled by a ...

The daring plot, in which a homeless man's corpse was planted in the sea to fool Hitler into changing tactics, has gone down ...