Simon is a consultant advising on the use of HMRC's complaints process, providing a bespoke service for anyone who is unhappy with how they have been treated and wish to seek redress. He also provides expert opinion on HMRC maladministration. In doing this he draws on the skills and experience gained from a successful career at HMRC where he reached senior levels, holding a variety of policy, technical and front line operational roles, including heading the Adjudicator's Office.In the latter Simon has enjoyed an influential role shaping the wider complaints and redress environment through his membership of the high level steering group overseeing the work of the then Parliamentary Ombudsman on defining the Principles of Good Administration, and the British and Irish Ombudsman Association (BIOA) Working Group on the Principles of Good Complaints Handling.