This Practice Note provides information on the various offences that can be committed by a firm or individual during the course of an investigation by the Financial Conduct Authority (FCA). This includes failure to comply with a document or information requirement; destroying, falsifying or concealing documents; providing information which is known to be false or misleading; or obstructing a search warrant. The Practice Note also considers section 177 of the Financial Services and Markets Act 2000 (FSMA 2000), which sets out the mechanism for dealing with a failure to comply during the course of an FCA investigation. Note that the Practice: Financial Services Enforcement Database incorporates detailed information on all substantive FCA and PRA Final Notices and, where available, Decision Notices from 2014 onwards. The Database may be searched and filtered by fields including rule/legislation breach, keyword such as ‘Open and cooperative’, sector, date, financial penalty, aspects of financial penalty analysis, outcomes including redress and prohibition orders, and other actions such as referrals to the Upper Tribunal. Failure to comply with an FCA information or