He was created a Life Peer 29 July 1998 taking the title Baron Warner, of Brockley in the London Borough of Lewisham,[REF][REF] and was Senior Policy Adviser to Home Secretary Jack Straw from 1997 to 1998 [REF].
He was Parliamentary Under-Secretary of State in the Department of Health from 2003 to 2005, and a Minister of State at the Department of Health from 2005 to 2007 [REF].