 From 1834, Campbell managed a substantial collection of sheep farms in Inverness-shire and Argyll in the west of Scotland.Campbell migrated to Terra Australis, arriving in Sydney, New South Wales in December 1838.He approached Governor George Gipps and the Macarthur family with letters of reference from the Colonial Office, and was soon given a job managing Richlands, one of the Macarthurs' stations near Goulburn in New South Wales' Southern Tablelands.