T2K is a neutrino experiment designed to investigate how neutrinos change from one flavour to another as they travel (neutrino oscillations). An intense beam of muon neutrinos is generated at the J-PARC accelerator centre on the east coast of Japan and directed across the country to the Super-Kamiokande neutrino detector on the opposite side of Japan. The beam is measured once before it leaves the J-PARC site, using the near detector ND280, and again at Super-Kamiokande. The change in the measured intensity and composition of the beam is used to provide information on the properties of neutrinos. In 2012, T2K observed the appearance of electron neutrino from a beam of muon neutrino (2016 Breakthrough Prize in Fundamental Physics). The current focus is on the indication of non-null values of CP violation. The EPAP group works on several aspects of the experiment related to oscillation physics, including neutrino nuclear interactions relevant for reducing the systematic errors. The group also contributed to the computing and electromagnetic calorimeter. The group has several leadership roles including on the near detector steering committee.