The Financial Conduct Authority issued this finalised guidance to replace previous European supervisory guidelines and set out expectations for identifying controllers under the Financial Services and Markets Act 2000. It details the criteria for determining significant influence, the aggregation of holdings including acting in concert, and the specific information requirements for submitting change in control notifications. The document further outlines the assessment criteria for proposed acquisitions, including reputation and financial soundness, and explains the regulator's approach to imposing conditions on approvals.