The Disciplinary Tribunal, at its hearing on 11 March 2010, determined that Mr Nicholas Tyrrell of London, a member of the Chartered Institute of Taxation (CIOT), was in breach of Rules 2.1.2 (Discreditable Conduct), 2.15 (Failure to inform the CIOT of disciplinary action taken by other professional bodies) and 2.13A (Failure to cooperate with the Taxation Disciplinary Board), as set out in the Institute’s Professional Rules and Practice Guidelines (PRPG) 2006, as amended.