In 1937 he replaced Henry Cotton at Waterloo Golf Club in Belgium but died the following year in a Belgian hospital following complications after an operation for appendicitis.

Forrester was at Balmore Golf Club, north of Glasgow from about 1925 but he became the professional at Cruden Bay in April 1932 when James Mackie left for Hunstanton.

[1] Forrester won the 1936 Scottish Professional Championship at Moray Golf Club taking the first prize of £55.

In June 1938 Forrester was operated on for appendicitis but he developed an ulcer on the brain and died age just 30 in a Belgian hospital.

Forrester's widow emigrated to America and their son became a doctor, serving in the US Air Force, and later became a politician.