The ICRR2019 logo depicts Manchester’s industrial and scientific heritage. The hexagon relates through honeycomb to the worker bee, a key symbol reflecting the productivity of Manchester’s textile workers during the industrial revolution (“busy bees”) and depicted in the mosaic flooring of Manchester Town Hall and on many buildings and street furniture within the city. The University of Manchester has supported twenty-five Noble prize winners. Eight of these were awarded for pioneering research into atomic structure and radioactivity. These are depicted in the eight electrons of our atom, which thereby mimicks oxygen, of significant relevance to radiation biology.