Who is Gordon Brown's opposition?

Gordon Brown, the former Prime Minister of the United Kingdom and leader of the Labour Party from 2007 to 2010, faced opposition primarily from the Conservative Party, led by David Cameron during his time in office. Additionally, other political parties, such as the Liberal Democrats and smaller parties like the Scottish National Party, also posed challenges to his governance. Brown's tenure was marked by economic issues, which intensified scrutiny from his political opponents.