The agency says the woman is 'involved in political interference activities' in the UK
MI5 plans to host online Q&As with serving intelligence officers and promote career opportunities on the platform
'Investigatory Powers Tribunal decided MI5 can secretly give informants permission to commit grave crimes'
Spends the last three weeks working with the security services including MI6
Jeremy Fleming will take up his new post at Government Communications Headquarters next month
Spies working for MI5 personally approached new converts, asking to work for the agency, claims new study