Nihil has been a consultant nephrologist for 11 years with an interest in hypertension management in adults. He has been involved in informing NICE on guidance development in hypertension on behalf of UKKA. His research includes investigating mechanisms to improve vascular endothelial health in patients with CKD. He has written a number of peer reviewed original research papers.
Nihil teaches undergraduate medical students at the Kent and Medway medical school.