 As of August 2016 there were 56 Fellows of the Royal Society, 51 Fellows of the British Academy, 15 Fellows of the Royal Academy of Engineering and 121 Fellows of the Academy of Medical Sciences amongst UCL academic and research staff.UCL has made cross-disciplinary research a priority and orientates its research around four "Grand Challenges", Global Health, Sustainable Cities, Intercultural Interaction and Human Wellbeing.In 2014/15, UCL had a total research income of £427.5 million, the third-highest of any British university (after the University of Oxford and Imperial College London).