He was vice-captain of the gold winning Great Britain squad in the 1988 Summer Olympics in Seoul. Four years earlier he won Bronze at the 1984 Summer Olympics in Los Angeles. He also won silver with the England squad at the 1986 Hockey World Cup in London, and he scored the two goals in the semi-final that helped England defeat West Germany 2-1 and progress to the final.
In a career that spanned over 25 Years, Barber won 99 caps for England & 68 for Great Britain. A player of uncompromising physicality and determination, he was recognised as one of the finest defenders and short corner strikers in the world. In 1983 Barber was awarded UK Hockey Player of the Year. Following the 1988 tournament, in which he scored 5 goals, Barber retired from international hockey at all levels, and continued to play for Slough Hockey Club until the early 90's when he joined Newbury & Thatcham Hockey Club. He played on for several more years until retiring from all forms of hockey in 1998.