The Information Tribunal has overturned a decision of the Information Commissioner and concluded that, where a request for information was unclear, a public authority, in this case the Cabinet Office, was under a duty to ask the complainant to clarify his request in order to identify the information requested. This decision confirms that a public authority is under a positive duty to assist a person seeking information and cannot avoid disclosure on account of a lack of clarity in a request. Case: Dr C Lamb v Information Commissioner, 16 November 2006.