List of shadow holders of the Great Offices of State
This is a list shadow holders of the Great Offices of State in the United Kingdom's Official Opposition Shadow Cabinet since Hugh Gaitskell's Shadow Cabinet of 1955. The purpose of the Shadow Cabinet is to scrutinise the opposing ministers, develop alternate policies, and hold the government to account for its actions in a form of checks and balances.
Source: Wikipedia — List of shadow holders of the Great Offices of State (CC BY-SA 4.0)