Career
In this role, he was responsible for investigating complaints against central and local government agencies, including Ministers of the Crown. Robertson began his career as a draughting cadet in the Lands and Survey Department in 1942. He served with the Royal New Zealand Air Force in the Pacific during the Second World War.
After returning to the public service he qualified as a chartered accountants
He was a State Services Commissioner, Secretary of Defence and Secretary for Justice before being made an Ombudsman. He was appointed an Ombudsman in 1984, and in 1986 became Chief Ombudsman, holding office until 1994.
He was a Director of the International Ombudsman Institute (IOI) from 1988 and President of the IOI from 1992 until 1994. Robertson was appointed a Commander of the Order of the British Empire in the 1982 Queen"s Birthday Honours.