Professor Jeys is a Consultant Orthopaedic Surgeon at the Royal Orthopaedic Hospital NHS Trust. He is a Professor of Health and Life Sciences at Aston University. Professor Jeys performs around 400 operations per year including knee surgery (key hole surgery for torn cartilages), knee replacement, revision knee replacements, uni-compartmental knee replacement and conditions relating to a broken knee. Professor Jeys also specialises in the treatment of bone tumours and soft tissue tumours.

Professor Jeys has published over 50 scientific papers in the world's most important orthopaedic Journals and has written three chapters in text books about surgery. He regularly lectures around the world on joint replacement and tumour surgery and is also a reviewer for leading Orthopaedic Journals, helping to decide whether research is robust enough to be published. Professor Jeys sits on several national committees including the National Cancer Research Institute and the National Cancer Intelligence Network.