Jim Boyling gave evidence under his fake identity during prosecution of activists he had infiltrated

Senior police officers praised an undercover officer who had lied to a court about his real identity during a prosecution of environmental activists, secret documents aired at the spycops public inquiry have revealed.

Jim Boyling, an undercover officer, gave evidence under his fake identity when he was prosecuted while masquerading as an activist. He was prosecuted alongside six campaigners for public order offences, but senior officers decided not to tell the court that he was actually a police spy.

His superiors authorised him to maintain his false identity through the legal case, adding later that he certainly “should be praised for the way in which he dealt with each of the court appearances”.

Two activists’ criminal convictions were overturned when the subterfuge later came to light.