Latrobe returned to England in 1784, and was apprenticed to John Smeaton, an engineer known for designing Eddystone Lighthouse. Then in 1787 or 1788, he worked in the office of neoclassical architect Samuel Pepys Cockerell for a brief time. In 1790, Latrobe was appointed Surveyor of the Public Offices in London, and established his own private practice in 1791. Latrobe was commissioned in 1792 to design Hammerwood Lodge, near East Grinstead in Sussex, his first independent work, and he designed nearby Ashdown House in 1793. Latrobe was involved in construction of the Basingstoke Canal in Surrey, together with engineers John Smeaton and William Jessop. In spring 1793, Latrobe was hired to plan improvements to the River Blackwater from Maldon to Beeleigh, so that the port of Maldon could compete with the Chelmer and Blackwater Navigation, which bypassed the town. The project lasted until early 1795, when Parliament denied approval of his plan. Latrobe had problems getting payment for his work on the project, and faced bankruptcy.