John McDonnell John McDonnell John Martin McDonnell (born 8 September 1951) is a British Labour Party politician who was appointed the Shadow Chancellor of the Exchequer in September 2015. He has been the Member of Parliament (MP) for Hayes and Harlington since the 1997 general election. He has served as chair of the Socialist Campaign Group in Parliament and the Labour Representation Committee, and was the chair of the Public Services Not Private Profit Group. He is also parliamentary convenor of the Trade Union Co-ordinating Group of eight left-wing trade unions representing over half a million workers. McDonnell attempted to stand for
Exchequer of Pleas involved in the Exchequer of Pleas as a check on the Lord High Treasurer. He evolved out of the Lord Chancellor's clerk, or "clericus cancellari", who sat in the Exchequer and was responsible for correcting and sealing writs of summons, also holding the Exchequer's copy of the Great Seal. The earliest appearances of such a clerk in the records come from 1220, when a document was signed by Robert de Neville, "cancellarius". The Lord Chancellors of the time were clergymen with little interest in judicial or fiscal matters; as a result, the clerk became more independent from the Chancellor and,