Daniel Khalife: the spy who blew his own cover – and exposed gaping holes in UK security

Dr Jessica White, acting director of terrorism and conflict studies at the Royal United Services Institute thinktank, who has researched infiltration by far-right groups in the British military, warned that there are “vulnerabilities” in the system. “The vetting process is lacking in a lot of ways. It was very much based on a personal declaration of political beliefs and affiliations. So if you’re not going to tick ‘yes’ in the box, there isn’t necessarily a secondary check – they take people’s word on it.”