She was created Baroness Featherstone, of Highgate in the London Borough of Haringey, on 20 October.Under the Conservative – Liberal Democrat coalition in 2010 she was appointed as a Home Office Minister with responsibility for criminal information and equalities, before being promoted, in 2012, Minister with responsibility for International Development.
Previously she was Liberal Democrat spokesman for Youth and Equality issues, and chair of the Liberal Democrats technology board.
As originator and architect of the same sex marriage law during the coalition, Featherstone launched the consultation by the UK Government on introducing same-sex marriage and was the first politician to take part in the Out4Marriage campaign, and returned to the Home Office as Minister of State in November 2014.Featherstone lost her parliamentary seat to Catherine West, the Labour candidate, in 2015, subsequently being nominated by former Deputy PM, the Rt Hon Nick Clegg for a Life Peerage in the Dissolution Honours 2015.
Featherstone took her seat as a member of the House of Lords on the Opposition benches on 26 November 2015.