William advises Jersey finance industry clients and international clients on financial services related disputes whether civil, criminal, contentious regulatory or a combination. This includes advisory work and advocacy. His specific expertise is in advising on money laundering matters (including corruption), regulatory and compliance investigations, disputes in the banking and trusts sectors, sanctions, production orders including TIEA work, insider dealing, reporting duties, asset recovery, reciprocal enforcement, cyber related risk and international mutual assistance generally.

He places particular emphasis on working alongside clients and their in-house lawyers/compliance staff and other external advisers to implement risk management based solutions to disputes in the regulated sector. He is experienced in politically sensitive and complex matters involving multiple legal issues and jurisdictions. He often advises on higher risk business in the financial services regulated sector, whether that is in client take on, transactional support or M&A support.

In addition to acting for Jersey regulated financial services businesses, he also acts for PLCs, individuals and foreign states.

He is a member of the Royal Court Rules Committee advising and assisting the Royal Court in its rule making capacity