Heather Mayfield joined the London Science Museum in 1979 as a museum assistant. By the time she left in 2014 she was its Deputy Director. In this podcast she describes her excitement in being part of the team unpacking and cataloguing Sir Henry Wellcome's extraordinary collection for the first time since his death. She maps her career within the world of museums and her passion for engaging with people around the ideas and controversies of science. Now CEO of Nottingham Castle Trust, Heather is back in the city where she grew up.