High Quality Content by WIKIPEDIA articles! David Ervine (21 July 1953 – 8 January 2007) was A British Unionist politician from Northern Ireland and the leader of the Progressive Unionist Party (PUP). During his youth Ervine was a member of the Ulster Volunteer Force (UVF) and was imprisoned for possessing bomb-making equipment. However whilst in jail he became convinced of the benefits of a more political approach to Ulster loyalism and became involved with the PUP. As a leading PUP figure Ervine helped to deliver the loyalist ceasefire of 1994.