Romilly has a wide range of experience in international arbitration proceedings before the International Chamber of Commerce (ICC), the London Court of International Arbitration (LCIA), the International Centre for Settlement of Investment Disputes (ICSID) as well as in ad hoc proceedings including those carried out under the United Nations Commission on International Trade Law (UNCITRAL) Rules.
In addition to acting as counsel, Romilly has regularly been appointed as secretary to the arbitral tribunal in international commercial arbitration proceedings.
Romilly practices in English and in French, and is an English qualified solicitor and a member of the Paris bar.