“ Controller Is an officer of at least SIO grade and always of a grade higher than the handler and co-handlers. The controller supervises the actions of the handler in his relationship with the informant. A controller, as the effective tactical supervisor, is at the operational centre of the system and will be directly responsible for the day to day supervision of the handler.”
“Two basic principles which are paramount to the effective management of any information handling and management system are supervision and control. It should be anticipated that most informant generated actions and operations will incur problems, primarily due to the character of the informant whose knowledge of criminal activities is usually gained as a result of active involvement with crime and criminals. As working with informants involves risks for both HM Customs and Excise and Informants the following basic system principles apply:- No member of HM Customs and Excise and no Customs and Excise informant is to counsel, incite or procure the commission of a crime. An informant is always a resource of HM Customs and Excise and never the property of an individual officer. An informant must be registered at the earliest practical opportunity, with the appropriate ACIO. Informant handlers and co-handlers must be accountable to their controllers. The informant must be accountable to the handler. All the informant’s intelligence gathering activity must be directed and controlled by the handler. Wherever possible all proposed meetings/contacts with an informant must be submitted to the controller for prior authorisation.”
“ Information for the protection of the revenue (1) The occupier or the proprietor shall furnish the Commissioners with any information relating to any relevant business or activity of his which they specify or information which they think it is necessary or expedient for them to be given for the protection of the revenue.”