 He remained in that role when Gordon Brown became Prime Minister in 2007, before becoming Minister of State for Transport in 2008.In 2009, he was promoted to the Cabinet as Transport Secretary, a position he held until 2010.Adonis has worked for a number of think tanks, is a board member of Policy Network and is the author or co-author of several books, including several studies of the British class system, the rise and fall of the Community Charge, and the Victorian House of Lords.