David has been the Editor in Chief of the Cochrane Library since January 2009. He worked previously as Editorial Director for the BMJ Evidence Centre, which is the division of the BMJ Group that produces Clinical Evidence and its counterpart for the public BestTreatments, BMJ Point of Care, and Best Practice. At the BMJ, David was initially Deputy Editor of Clinical Evidence under Fiona Godlee, moving to the Editor role when she became Editor of the BMJ. David worked as a General Practitioner in an urban practice in South London for 15 years until 2003. During that time he also undertook roles in continuing professional development for primary care professionals, and was a clinical governance lead for a Primary Care Group.