Duncan rightly takes his place in the annals of the College when his prolific scores in 1951 marked the renaissance in the fortunes of the 'Eleven', following the restrictions on 'play' in the second World War. The outstanding feature of the 1951 season had been Duncan's batting in scoring four centuries to equal C. R. Maxwell's 1931 record followed, in 1952, by an opening partnership with Gordon Smith (B. 1946-52), against Dulwich, when they scored 210 to put their opponents 'to the sword'.
Duncan entered Aldrich House in September 1947 and in the next few years made a significant contribution to the College's fortunes, not only on the cricket ground, but the Colts and second XV as well.
As a National Serviceman he joined the Royal Military Police when cricket for the Army left little time to adjust to his duties as an Assistant Provost Marshal in BAOR. He was commissioned at Eaton Hall OCS and following his 'demob' joined Osmans in the textile business.
Duncan was an enthusiast at whatever he undertook and generated much laughter and comradeship among his large family and many friends in the business world, at the golf club and cricket grounds around West Sussex, where lived for most of his life.