Career
He was one of the original directors and financiers of the South Australia Company, the company that was formed in London in 1834 to promote the settlement of the colony that was to become South Australia. He was an original director of the South Australian Banking Company and the first Chairman of the South Australian School Society whilst living in England. Rundle never visited South Australia.
His business interests included the Tavistock Bank, Gill and Rundle – Merchants and Carriers, Rundle and Company Gas Works, Gill and Rundle Foundry and a brewery.
A canal linking Tavistock to the port at Plymouth was leased by his company and they had their own lime kilns, warehouses and wharves.