Career
Miller worked in book publishing. She was made a Life Peer as Baroness Miller of Chilthorne Domer, of Chilthorne Domer in the County of Somerset on 28 July 1998. She was the Liberal Democrat spokesperson in the Lords on Agriculture and Rural Affairs 1999-2001, Environment, Food and Rural Affairs 2001-2007 and Home Affairs 2007-2009.
She now chairs the All Party Groups on Agroecology and Food and Health.
She is a co-president of Parliamentarians for Nuclear Non Proliferation and Disarmament. When not in Parliament she works on the family vineyard.