Ian Grey qualified as a physiotherapist in 2001 at the University of Pretoria.

He became a credentialed therapist in the McKenzie Method of Mechanical Diagnosis and Therapy in 2011. In 2015 he received his diploma in MDT, which is the highest level of training provided by the McKenzie Institute International.

He completed this theoretical Component with the University of Dundee spending the clinical component working in Kings Cross Community hospital in Scotland. He was the first clinician to represent South Africa at the McKenzie World Congress in Denmark where he also took the Diploma final exam.

Ian is a private practice owner, and in 2015 his practice became the first McKenzie accredited practice in South Africa. Ian has been regularly hosting the McKenzie Institutes Educational Program and Certification process in South Africa. Ian was promoted as the first Southern African Instructor of the McKenzie Institute in October 2018.

In 2019 Ian established the McKenzie Institute of Southern Africa and currently serves as Chairperson for the Institute