About Us

Impact Diagnostics is a new “spin out” company formed by four medical physicists / clinical engineers to provide objective tests for hand-arm vibration and other services in the areas of medical physics and clinical engineering.

The directors of the company have had many years experience in HAVS, vascular ultrasound and medical engineering.


Neil Pugh BSc MSc PhD FInstP CPhys

Managing Director

After graduating from the University of Wales College Swansea with a degree in physics, Neil took up his first post as a medical physicist in Manchester, completing a part time MSc in Medical Physics at Leeds University. He returned to South Wales in 1985, working for 3 years in nuclear medicine before switching to the Doppler Ultrasound department. During this time he completed a PhD thesis investigating the effects of contrast media on the peripheral circulation. In 2001, he was appointed to the post of Consultant Medical Physicist and Head of Ultrasound Physics in the Medical Physics and Clinical Engineering directorate, with responsibility for vascular ultrasound and quality assurance. He holds honorary positions in Cardiff University, where he runs modules in Medical Ultrasound and Foundation Science on undergraduate & PGC / PGD / MSc courses. He heads an active research group containing several PhD students, along with personal research interests in ultrasound in the diagnosis of vascular disease and ultrasound vascularity assessment in gynaecology and fertility, both of which have resulted in many publications.


Len Nokes BEng MSc PhD MBBCh MD Dip SEM GB&I FFSEM(UK) FIMechE CEng

Medical Director

Len Nokes is dual qualified in engineering and medicine and is a Fellow of IMech E. Currently he is professor of Clinical Biomechanics at Cardiff University. His PhD was in the field of trauma biomechanics and involved analysing human bone fractures using impact dynamics. His current research interests are in the field of sports biomechanics which involves analysing the forces to cause trauma. His understanding of the mechanism and measurement of forces to cause injury to the human body combined with his clinical background provides him with an ideal platform to develop the research arm of the company.


John Woodcock OBE BSc MPhil PhD DSc CPhys FInstP CSci FIPEM CEng

Scientific Director

John Woodcock is the recently-retired Professor of Medical Physics and Clinical Engineering at Cardiff University and Clinical Director of Medical Physics and Clinical Engineering at the University Hospital of Wales. He is a leading expert in medical ultrasound and blood flow assessment, and was part of a small team advising the Department of Trade and Industry in the production of test procedures for Hand-Arm Vibration Syndrome in Miners.