With the prospects of a link between the navigation and the Basingstoke Canal being constructed, the undertaking was valued at £24,000, and D'Arcy sold a half share in it to his agent, George Hollis. He then sold the other half to him, and moved to Ireland. Hollis became the sole proprietor from 1804, having bought out his sleeping partner. Throughout its life, the navigation had almost been a monopoly, but Hollis planned to end this, and obtained an Act of Parliament in 1802, to make it an open navigation, where anyone could use it on payment of the appropriate tolls. These were laid down in the Act, ending the setting of tolls by the Commissioners. The Act also specified that he had three years to put the river in order, which he appears to have achieved, since he then leased it to a group of merchants.