A head-and-shoulders portrait of Sir Brian Leveson, a white man with rimless glasses and grey hair at the sides of his head, wearing a navy suit with a light blue shirt and navy tie. He is standing in a wood-panelled room with heraldic designs behind him and is light by soft light coming from the left of the picture.Image source, Alamy
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Sir Brian Leveson is the Investigatory Powers Commissioner, responsible for overseeing MI5's activities

ByDaniel De SimoneInvestigations correspondent
  • Published14 minutes ago

The man responsible for overseeing the conduct of the UK's intelligence services has said that MI5 lying to multiple courts while defending a violent neo-Nazi spy is as "serious as anything" he has ever dealt with.

"Oversight depends on candour," said investigatory powers commissioner Lord Leveson. "Failings of candour undermine the entire basis of oversight and accountability."