Undercover police officers routinely adopted a tactic of promiscuity" with the blessing of senior commanders, according to a former agent who worked in a secretive unit of the Metropolitan police for four years. The former undercover policeman claims that sexual relationships with activists were sanctioned for both men and women officers infiltrating anarchist, leftwing and environmental groups. Sex was a tool to help officers blend in, the officer claimed, and was widely used as a technique to glean intelligence. He said undercover officers, particularly those infiltrating environmental and leftwing groups, viewed having sex with a large number of partners "as part of the job". His comments contradict claims last week from the Association of Chief Police Officers that operatives were absolutely forbidden to sleep with activists. The claims follow the unmasking of undercover PC Mark Kennedy, who had sexual relationships with several women during the seven years he spent infiltrating a ring of environmental activists. Another two covert officers have been named in the past fortnight who also had sex with the protesters they were sent to spy on, fuelling allegations that senior officers had authorised sleeping around as a legitimate means of gathering intelligence.