William Hodson (“Bill”) Brock (15 December 1936–16 February 2025)

This obituary of William Hodson ("Bill") Brock (1936-2025) outlines his life and career as one of the leading historians of science, especially chemistry, of his generation. It describes his difficult childhood, his work at the University of Leicester (where he spent his entire career), his research and writing, and his contributions to the history of science community, concluding with a summary of the remarkable number of tributes paid to him following his death.