David Simpson was the Member of Parliament (MP) for Upper Bann from 2005 to 2019. He had previously been a Member of the Northern Ireland Assembly (MLA) for Upper Bann, from 2003 to 2010.
David was a member of the Parliamentary Joint Committee on Statutory Instruments, the Commons Select Committee on Statutory Instruments (2005–2009) and the Transport Select Committee (2007–2008). He joined the Northern Ireland Affairs Committee in 2008. He has been DUP Spokesperson on Trade and Industry (2005–2007), Transport (2007–2009), International Development (2007– 2010), Education (2007-2010), Business, Innovation and Skills (2009-2017), Communities and Local Government (2010-2015) and Business, Energy and Industrial Strategy (2017-2019).