Simon is ranked as a leading junior in company, partnership and insolvency matters, praised as “an outstanding Chancery barrister who is a KC and High Court judge in the making” who is “excellent at everything and should be a silk already” (Legal 500). His practice also encompasses contractual disputes of all kinds, bank recovery proceedings, professional negligence and property disputes, together with asset tracing and freezing orders. Very often he appears without a leader against KCs. He practices mainly in the Commercial Court and Chancery Division and has acted in the Supreme Court and Court of Appeal (in the latter with and without a leader).