Chuka Harrison Umunna is a British businessman and former politician who served as Member of Parliament (MP) for Streatham from 2010 until 2019. A former member of the Labour Party, he was part of the Shadow Cabinet from 2011 to 2015. He left Labour in February 2019, when he resigned to form The Independent Group, later Change UK, along with six other MPs. Later in 2019, he left Change UK and, after a short time as an independent MP, joined the Liberal Democrats. In the 2019 general election, he was unsuccessful in being re-elected as an MP and did not return to the House of Commons.

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.