Whilst at Lincoln he was Music Master at South Park High School, Conductor of the Great Burton Choral Society, and Lecturer in Music for the Extra-Mural department of the University of Nottingham. In 1934 he became a Doctor of Music (Dunelm) and was the youngest Doctor of Music in the country.
From 1934 to 1937 he was Lecturer in Music at Sheffield University. From 1938 to 1939 he was Tutor for the Special Music Course at the City of Sheffield Technical College.
From 1948 he was head of music at King Edward's School, Birmingham. His eminent pupil Harrison Oxley was his Assistant until leaving for Christ Church, Oxford in 1951. From 1958 to 1972, Grant was professor of music at the University of Bristol.
In 1958, Willis Grant was invited to become the Stanley Hugh Baddock Professor of Music at Bristol University, and he held this post until his retirement in 1972.
He died on 9 November 1981.
Assistant Organist of:
- Lincoln Cathedral 1931–1936
William Frederick Dunnill
|Organist and Master of the Choristers of St. Philip's Cathedral, Birmingham
- The Succession of Organists. Watkins Shaw.
- Cathedral Organists of the 20th Century. Enid Bird.