G. H. Teed completed his education at McGill University in Montreal before setting out to travel the world. In about 1900 he came to Australia, where he was a sheep farmer. It is not known how long he stayed, but he was working as a writer in London from about 1912. Here he was published regularly in Union Jack, including many contributions to the multi-authored Sexton Blake series of detective novels. After serving with a Canadian troop during World War I, he worked for an export firm in India before returning to London to write more Sexton Blake stories. He wrote many of these stories while living in France, but returned to London in the late 1930s where he died in 1939.
Among his contributions to Sexton Blake lore was the invention of Yvonne Cartier, an Australian adventuress whose family are swindled out of their land, after which she hunts down the eight men responsible. This was the beginning of a long series of Cartier stories in which she was originally an antagonist and later a companion of Sexton Blake.