Gavin Laurence Barwell, Baron Barwell, PC (born 23 January 1972) is a senior British politician and former Downing Street Chief of Staff to Prime Minister Theresa May. A member of the Conservative Party, Barwell previously was the Member of Parliament (MP) for Croydon Central from the 2010 general election until the 2017 general election. Shortly after losing his seat, Barwell was appointed Downing Street Chief of Staff by Theresa May, following the resignations of Fiona Hill and Nick Timothy on 10 June, 2017. Barwell worked for the Conservative party headquarters from 1993 until his election in 2010 and was – between 2003 and 2006 – the Party's Chief Operating Officer sitting on the Party Board working closely with Party Leaders Michael Howard and David Cameron.