Dr Jason Lester is a senior consultant clinical oncologist specialising in lung cancer and urological cancers. Following medical training in London and oncology training in Cardiff, UK, Dr Lester has been a consultant oncologist for 15 years and is currently deputy clinical director of Velindre Cancer Centre, and chairman of the Rutherford Cancer Centre Local Medical Advisory Committee for Wales. He is also the clinical lead for the All Wales Prostate Cancer Brachytherapy Service. Dr Lester has been involved in numerous clinical trials in both lung and urological cancer, and has published extensively in these fields. He is the lead investigator for the I-START trial, which is investigating dose-escalated radiotherapy, and the SKOPOS trial, a vaccine trial in malignant pleural mesothelioma. Dr Lester advises patients on all aspects of the non-surgical treatment of lung cancer, mesothelioma and urological cancers (prostate, kidney, bladder). He is responsible for prescribing and supervising the administration of radiotherapy, radioisotope treatment, cytotoxic chemotherapy and hormone therapy.