MI5’s chief has apologised after a court ruled that a senior spy gave “false evidence” that was relied on in three court cases about a neo-Nazi informant who had used his status to threaten his girlfriend and tried to kill her with a machete. Although there was no “deliberate attempt” to mislead, the high court held that MI5’s subsequent explanations could not be relied on – and has asked a watchdog to examine if a contempt of court prosecution should be brought. View image in fullscreen The director general of MI5, Ken McCallum. Photograph: Yui Mok/PA Ken McCallum, the head...