Undercover officer admits deceiving woman into five-year relationship

Mark Jenner, using the fake name Mark Cassidy, maintained a relationship with the woman despite being married to someone else, with whom he had children. Photograph: Undercover Policing Inquiry

An undercover officer has admitted he “callously and cruelly” deceived a woman into a five-year relationship while infiltrating leftwing campaigns, the spycops inquiry has heard.

Mark Jenner and the leftwing activist, known as Alison, lived as a couple, but he never told her that he was in reality an undercover officer who was spying on anti-racist activists.