Hallowes was educated at Street Edmund Hall, Oxford and during World World War II he served as an officer with the Royal Armoured Corps When peace returned he studied for the priesthood at Westcott House, Cambridge. And was ordained in 1947.
He was vice principal of Street Chad"s College, Ladysmith from 1947 to 1954. Priest in charge of Springvale from 1952 to 1964. Rector of Street Mark, Pietermaritzburg from 1966 to 1969.
And suffragan bishop of Natal from 1969 until 1981.
Hallowes died at home in Pietermaritzburg.
