Professor Dhillon Qualified UCL in 1978 and appointed Consultant ENT Surgeon in 1989. he is heavily involved in postgraduate medical education, particularly in primary care, and developed with Rila Institute of Health Sciences, numerous postgraduate courses for GPs.
He was a National Clinical Lead in the UK Department of Health Modernisation Agency and worked closely with the Department of Health collaborative in CHD & Emergency Care, for the National Association for Primary Care and Primary Care Trusts and now CCG groups.

Professor Dhillon Is on editorial board of “The Otorhinolaryngologist”, and edits a primary care journal, Clinical Focus(Primary Care).

He has an interest in “Obstructive Sleep Apnoea” and recently developed a “Stroke Management Course” with The London Cardiac and Stroke Networks; kitemarked by the UK Forum for Stroke Training.