 He was also during this period advocating railways as an extension to the Grand Surrey Canal and as an alternative to the (never-built) London and Cambridge Junction Canal; and steam locomotives for the Surrey Iron Railway.Stephenson, however, was never prepared to produce locomotives for James to demonstrate to potential clients and no sales were made through his agency.In 1822-3, James spent time in the King’s Bench Prison in Southwark for debt (during which time he wrote a scheme for a network of railways in the south of England) and later in 1823 he was adjudged bankrupt.