Dalton was called to the bar by Gray's Inn in 1901 and became then employed as legal assistant at the Land Settlement Board of the Orange River Colony.[3] A year later, he was appointed a justice of the peace and worked as assistant resident magistrate.[3] In 1910, when the Colony was incorporated into the Union of South Africa, Dalton moved to British Guiana joining its Supreme Court as a registrar.[3] Until 1919, he acted at several times in various offices and in June of that year became a Puisne Judge.[5]
In 1906, Dalton married Beatrice Templeton, daughter of William B. Cotton; they had a son and three daughters.[5] She died in 1823 and after eight years as a widower, he remarried Winifred, only daughter of Edward Adams.[5] Dalton died in Sussex in 1945.[1]