A police officer has been covertly filmed attempting to recruit an activist to spy on Cambridge university students and other campaigners. The activist secretly recorded this meeting with a police officer who had asked him to become an informant. Here, the officer discusses possible payments and suggests the activist might get Â£30 for going to a UK Uncut or Unite Against Fascism meeting. We are not revealing the identities of the police officer and activist. A Cambridgeshire police spokesperson said: 'Officers use covert tactics to gather intelligence, in accordance with the law, to assist in the prevention and detection of criminal activity'