Ed Miliband became Leader of the Labour Party and Leader of the Opposition upon being elected to the former post on 25 September 2010. The election was triggered by Gordon Brown's resignation following the party's fall from power at the 2010 general election, which yielded a Conservative–Liberal Democrat Coalition. Miliband appointed his first Shadow Cabinet in October 2010, following the Labour Party Shadow Cabinet elections. These elections were the last such elections before they were abolished in 2011.

Edward Samuel Miliband is a British politician serving as Shadow Secretary of State for Energy Security and Net Zero since 2021. He has been the Member of Parliament (MP) for Doncaster North since 2005. Miliband was Leader of the Labour Party and Leader of the Opposition between 2010 and 2015. Alongside his brother, Foreign Secretary David Miliband, he served in the Cabinet from 2007 to 2010 under Prime Minister Gordon Brown.