Over recent years John has helped bring in to the University close to £1.2 million worth of external funding, either in the form of personal fellowships (Health Foundation), project grants (EPSRC, NIHR, BBSRC), industrial funding (Blatchford, Essilor International, Vicon Motion Capture Systems), or via doctoral training awards from EPSRC (x2), NIHR, Health Foundation, and the College of Optometrists (x3). In leading and satisfying the aims of these grants, he has made considerable impact across a number of fields, which is reflected in his work being published in wide ranging scientific journals, including Experimental Brain Research, Gait and Posture, Clinical Biomechanics, Investigative Ophthalmology and Vision Science, Experimental Gerontology, and Journal of NeuroEngineering & Rehabilitation; in the past 10 years, he has published close to 45 scientific articles in such journals. John has given several invited talks and/or seminars, and presented over 20 papers at international conference. Such standing means he is regularly asked to review journal articles submissions for, Investigative Ophthalmology & Visual Science, Journal of Biomechanics, Gait and Posture, Clinical Biomechanics, Archives for Physical Medicine and Rehabilitation, and Prosthetics and Orthotics International. He is also asked to review grant applications for Strategic Promotion of Ageing Research Capacity (SPARC), MRC, EPSRC, and The Health Foundation.