Chair of the Infrastructure Committee
North Belfast Constituency
William has served on Belfast City Council since 2005 and during that time he has been the Deputy Lord Mayor and the High Sheriff of Belfast. He has also been a member of Belfast City Centre Management and the Belfast District Policing Partnership.
In September 2010 William joined the Northern Ireland Assembly to represent the people of North Belfast, as a replacement for Nigel Dodds MP, in keeping with the Party’s pledge on multiple mandates. Since then he has been re-elected for North Belfast.
Following the 2011 election William served as Assembly Private Secretary to the Department for Social Development, as member of the Culture, Arts and Leisure Committee and a member of the Justice Committee.
After the 2016 Assembly Election William was appointed as the Chair of the Infrastructure Committee.