His early posts were in the Cambridge biochemistry department (1963–68). He joined the
MRC Laboratory of Molecular Biology in
Cambridge in 1968 to set up a cellular
immunology programme. In 1971, he joined the Immunology Division of the Department of Pathology at the University of Cambridge. He spent sabbatical years at the
Salk Institute,
La Jolla, USA (1965–66) and
University of Leiden, the Netherlands (1976–77). He became acting head of the Pathology Department in 1987. In 1988, Munro spent a sabbatical year working in the
biotechnology company
Celltech. and holds non-executive directorships of
Blackwell Publishing Ltd and
Paradigm Therapeutics. ==Personal life==