In the 1930s he gained a reputation as a pioneer of abstract painting in England, but became attracted by social realism and became associated from 1937 with the Euston Road School.
In the 1930s he gained a reputation as a pioneer of abstract painting in England and was a member of the Objective Abstraction movement. Moynihan was later attracted to social realism and became associated from 1937 with the Euston Road School.