Dame Margaret Olivia Hillier, known as Meg Hillier, is a British Labour and Co-operative politician who was elected as the Member of Parliament (MP) for Hackney South and Shoreditch at the 2005 general election, was a junior government minister (2007–10) and was succeeded by Caroline Flint as Shadow Secretary of State for Energy and Climate Change in the Labour Party October 2011 reshuffle. She has chaired the Public Accounts Committee since 2015.