With decades of clinical experience, including as a senior NHS consultant at the Royal Free Hospital in London, Dr Weir now runs a specialist practice at 10 Harley Street focused on ME/CFS and Long Covid. These are complex, often misunderstood conditions with significant unmet medical needs. As a former member of the ME/CFS NICE Guideline Development Group, he combines a wealth of experience and a desire to help people with these incapacitating conditions in a way that is informed by an accurate understanding of its underlying pathology. This includes confirming the nature of the diagnosis and providing appropriate therapeutic advice.