His expertise was used by
Lloyd Hesketh Bamford-Hesketh for the overall design of
Gwrych Castle. He was also responsible for the
Commercial Rooms, Bristol (1810), built in his favoured
Grecian style. It was his first important commission. Busby's plans were accepted in a public competition in 1810. The building was completed the following year. At the time it was considered to be the best classical church in Brighton. which was built as a self-contained settlement surrounded by open fields. In late 1824 Busby signed a contract with the Reverend Thomas Scutt, who was a landowner of more than 300 acres to the west of Brighton, to develop a new town, in 35 acres of land, in the Regency style. It would be named Brunswick Town. It was developed between 1824 and 1834, the time of his death. In 1824 he had advocated hot running water for his houses in Brunswick Square. ==Blue plaque==