Marianne Clayton, is one of the founders of the law firm Clayton & Segura specialised in state aid. She is a member of the Paris and Brussels Bar (Liste E). Former senior officer at the Competition and State Aid Directorate at the EFTA Surveillance Authority, Marianne Clayton has over 15 years of state aid experience within the regulators and major international law firms. Marianne Clayton graduated in law at the Universities of Kings College and Paris I – Sorbonne.