In British politics, the Shadow Home Secretary is the person within the shadow cabinet who shadows the Home Secretary; this effectively means scrutinising government policy on home affairs including policing, national security, and matters of citizenship. The Shadow Home Secretary also formerly had responsibility for the criminal justice system and the prison service; these responsibilities are now held by the Shadow Justice Secretary. If the opposition party is elected to government, the Shadow Home Secretary often becomes the new Home Secretary, though this is not always the case. The office has been held by Labour MP Yvette Cooper since 29 November 2021.