Ben Goldacre is a doctor, academic, best-selling author, and campaigner. He trained in medicine at Oxford and UCL, in psychiatry at the Maudsley, and in epidemiology at LSHTM. His academic and policy work is in epidemiology and evidence based medicine, where he works on various problems including variation in care, better uses of routinely collected electronic health data, access to clinical trial data, and efficient trial design.
He has also written government papers on evidence based policy, and founded a successful global campaign for research transparency. His book Bad Science reached #1 in the UK non-fiction charts and has sold over half a million copies worldwide. A longer bio is here, and he is on twitter here.