Between 1979 and 1982 he was an assistant lecturer (monitor) at the same institution.

He stayed on there as an assistant lecturer in Horticulture until 1954.

In 1967 he became an assistant lecturer at the University of Dakar.

He then went to the University of Leeds as an assistant lecturer from 1964 to 1966.

He advanced from assistant lecturer in 1951 to professor in 1958.

He accepted a position at the University of Nebraska, as an assistant lecturer.

Leslie's gifts for communication were soon appreciated as he became assistant lecturer in 1959.

He worked briefly as an assistant lecturer at the University of Hull in 1964 and 1965.

Roberts was appointed assistant lecturer and tutor in British history.

There, he worked as an assistant lecturer for German literature from 1972 to 1977.