Guyton was in partnership with John, Joseph, and Thomas Ridgway; and George Butler Earp in Wellington. The partnership was called Ridgways, Guyton, and Earp and was formed in Liverpool in 1839. They were shipping owners and agents, land agents, and merchants. Guyton had arrived in Wellington on 29 August 1840 with Isaac Ridgway and Earp. After setting up business, Guyton sailed from Wellington to Wanganui on the "Jewess" on 9 December 1840 and returned to Wellington on the "Jane" on 30 January 1841. The purpose of his journey appears to have been selecting sections for sale. A number of these sections, owned by the partnership, were sold in 1859 well after the partnership had ended. The partnership was dissolved on 27 July 1844. A new partnership was formed called Ridgeways, Hickson, and Co. Guyton was not a member.