There have been ground-breaking developments in the treatment of cancer in the past few decades, with more on the horizon. Here, John Wagstaff, MB ChB, MD, FRCP, Swansea University, Swansea, UK, gives an expert overview of the key milestones and what’s to come. This interview took place at the International Society of Oncology Pharmacy Practitioners (ISOPP) Symposium 2019, hosted by the British Oncology Pharmacy Association (BOPA), held in London, UK.