Robb, who was working as a graphic designer at the time,[REF] made the headlines, albeit without his name being revealed, in 1993 when he gave evidence at the trial of Colin Duffy, who was charged with the murder of Ulster Defence Regiment (UDR) soldier John Lyness [REF].
However Robb first came to prominence with the PUP, serving as a member of their negotiations team during the early stages of the Northern Ireland peace process [REF].