1. Consultant Orthodontist, Riyadh Military Hospital, Riyadh, Kingdom of Saudi Arabia
2. Research Associate, Division of Craniofacial and Developmental Sciences, Unit of Orthodontics, UCL Eastman Dental Institute (EDI), London, UK
3. Chair in Exercise Biochemistry and Cell Biology, Head of Muscle Cellular and Molecular Physiology Research Group, Institute of Sport and Physical Activity Research (ISPAR Bedford), University of Bedfordshire, Honorary Professor, UCL EDI, London, UK, Visiting Professor, School of Sport, Exercise and Health Sciences, Loughborough University, Visiting Professor, Cranfield Health, Cranfield University
4. Professor, Chairman of Division of Craniofacial and Developmental Sciences, Head of Unit of Orthodontics, UCL EDI, London, UK