Dr Michael-John Devlin is a Consultant Medical Oncologist specialising in gynaecological cancers, skin cancer and melanoma, including ocular melanoma. He is Clinical Director of Acute Cancer Services at St Bartholomew's Hospital and an Honorary Clinical Senior Lecturer at Queen Mary University of London.

His clinical interests include ovarian cancer and clear cell gynaecological cancers, alongside the treatment of melanoma and other skin cancers. He leads the North East London ocular melanoma service, delivered jointly with Moorfields Eye Hospital.

Dr Devlin studied medicine at Queen's University Belfast and completed oncology training in Northern Ireland and London. His training included fellowships in gynaecological oncology at University College London Hospitals and early-phase clinical trials at the NIHR Clinical Research Facility.

He completed a PhD at Barts Cancer Institute examining the immune microenvironment of clear cell ovarian cancer, supported by MRC and ESMO research fellowships. During a subsequent NIHR Academic Clinical Lectureship, he was Translational Lead for the PEACOCC trial of pembrolizumab in clear cell gynaecological cancers, published in JAMA Oncology.