Christopher specialises in taxation and revenue matters, particularly capital/revenue distinctions, capital gains taxation, employee share schemes, taxation of companies, limited partnerships, trusts, CFCs and CFTs, director penalty notices and Wickenby-related matters. He has extensive experience in advising on trust deeds. His work includes assisting clients in responding to ATO position papers during audit and in objections and appeals, as well as in settlement conferences and mediations.

Before coming to the Bar, Christopher was a taxation partner with PricewaterhouseCoopers, now PwC. He is a CTA of the Tax Institute as well as a member of the Taxation Committee of the Law Council of Australia.