Mauritius

In 1810 Swanston was a member of an expedition which obtained the political overthrow of Mauritius and was appointed to survey the island.

India

In May 1814 Swanston left England and returned to duty in India via Scutari and Baghdad, a distance of 3000 km on horseback in 48 days. In September 1817 he was ordered to raise 1000 men for the Poona Auxiliary Horse brigade and was appointed commander. In command of these troops he was involved in several actions and was wounded three times. In the aftermath to the Battle of Koregaon in 1818 he captured Trimbakji Dengle, a Marathi leader on whose head the British had placed a price of £10,000. In January 1819 Swanston was promoted captain, but within a year lost his command because of great reductions in the army. In 1821 he was offered the position of assistant quartermaster-general of the army but declined, accepting instead the office of military paymaster in the provinces of Travancore and Tinnevelly a position he held for six years. In September 1828 he was granted a year's leave to Van Diemen's Land on account of ill health.

Australia

Swanston arrived at Hobart Town in HMS Success on 4 January 1829 with his wife Georgina (née Sherson) and their 6 children. Although on leave, he soon purchased 'Fenton Forest' an estate on the Styx River. He also bought several other properties of over 3000 acres (12 km²). He returned briefly to India in 1830 at the expiration of his leave, where he resigned his military commission and returned to Van Diemen's Land in May 1831.

In November 1831 he was appointed managing director of the Derwent Bank, which had recently been established as a partnership predominantly by supporters of the government. He was also nominated a member of the Tasmanian Legislative Council in 1832. He soon bought a controlling interest in the Derwent Bank, and under his control the enterprise prospered attracting large amounts of overseas capital for investment at high rates of interest. He was responsible for introducing the overdraft system to Australian banking in 1834 in which year he established the Derwent Savings Bank. In addition to banking he conducted an import-export business for commodities such as tea, rum and wool. On behalf of many officers and officials in India he invested money in Van Diemen's Land in mortgages and bank shares.

In 1835 a group of Hobart investors, including Swanston, formed the Port Phillip Association to explore and acquire land in Port Phillip District (present-day Victoria). Swanston acted as the syndicate's banker. In 1835 John Batman's expedition landed at Port Phillip and claimed to have bought 600,000 acres (2400 km²) including the future sites of Melbourne and Geelong under a document called Batman's treaty. Recognition of the title to this land was refused by the government in Sydney and London despite strenuous claims by the Association of its legality. The Port Phillip Association was granted compensation of £7,000, allowed as a reduction on the purchase price of land bought by the association in Melbourne at public auction. Most of the members of the Association sold their entitlements to Swanston. He changed the name of the Association to the Derwent Company before dissolving it in 1842.

In 1841 Swanston had converted the Derwent Bank into a mortgage bank, but as the economic depression of the 1840s deepened, the flow of overseas capital to the bank greatly diminished, the value of the land over which the bank held mortgages dropped and the price of wool fell and debtors to the bank found difficulty in meeting interest payments. He managed to keep the bank going for another five years; but was then forced to resign and the Derwent Bank went into liquidation. His personal liabilities were estimated at £104,375. He became a bankrupt and settled with his creditors at 10 shillings in the pound.

In 1844 Swanston, in partnership with his son-in-law Edward Willis, began trading as a grazier and merchant in Geelong, Victoria. They controlled several properties in western Victoria totaling over 150,000 acres (600 km²).

In 1850 he left Australia and sailed for America but stayed only briefly. Departing California to return to Australia, he died on 5 September on board "Raven" and was buried at sea.^[1]