Siân Herbert-Jones is Member of Hong Kong Institute of Certified Public Accountants, Member of Sodexo Women'S International Forum for Talent and Member of Institute of Chartered Accountants in England & Wales and on the board of 10 other companies.

In the past she occupied the position of Chairman at Etin SAS, Group Chief Financial Officer & Executive VP at Sodexo SA Chairman of Sofinsod SAS, Chairman for Sodexo Etinbis SAS, Member-Management Board at Sodexo Pass International SAS, Member-Management Board at One SAS, Member-Management Board at Sodexo en France SAS, Member-Management Board at Sodexo Entreprises SAS and Treasurer & Director at Sodexo Remote Sites USA, Inc. (which are all subsidiaries of Sodexo SA), Member-Supervisory & Management Board at One SCA, Partner at PricewaterhouseCoopers LLP, Finance Manager at PricewaterhouseCoopers LLP (United Kingdom) and Manager-Mergers & Acquisitions at PricewaterhouseCoopers Afrique.

She received a graduate degree from the University of Oxford.