Born in Paddington, London, was the son of Lieutenant General Bernard Freyberg and his wife Barbara McLaren.
During the Second World War, he served with the 2nd New Zealand Division in Greece in 1941 and the Long Range Desert Group in the Middle East 1941–42, then with the Grenadier Guards in Tunisia and Italy 1942–45.
Postwar he was in the British Army of the Rhine 1950–51 and other postings and the Ministry of Defence.
He was commander of the Honourable Artillery Company, Infantry Battalion between 1965 and 1968.
He was awarded the Military Cross in 1943 and appointed an Officer of the Order of the British Empire in the 1965 Birthday Honours.