Built 1989 to the designs of Brown and Parnaby Architects. Winner of RIBA Award for Architecture. 

Sources:

Bob Allies and Victoria Thornton, 'Modern British Architecture' in RIBA Journal, May 1993, p.41
John B. Hilling, The Architecture of Wales: From the First to the Twenty-First Century, p.269
Jonathan Vining and Malcolm Parry, Wales 1901-2000, p.29