Margaret Beryl Jones Baroness Jones of Whitchurch (born 22 May 1955) is a British trade union official and Labour politician. She was Chair of the Labour Party from 2000 to 2001.Jones is Director of Policy and Public Affairs of the trade union UNISON. In 1979 she became a regional official of National Union of Public Employees (NUPE) which merged into UNISON. She has a background of fighting low pay and discrimination at work.