Dr. Cleator is an experienced breast and colorectal oncologist specializing in the delivery of chemotherapy, targeted treatments, and radiotherapy for early and advanced disease. She trained at Oxford University and has an academic background, having undertaken a PhD at the Institute of Cancer Research and Royal Marsden Hospitals studying gene profiling for personalized chemotherapy delivery. Dr. Cleator is active in research and education, with particular interests in treating breast cancer in young women and during pregnancy, neoadjuvant treatment, personalization of treatment using gene assays, and radiotherapy for early breast cancer.