Despite finishing fourth in the English National Diving Championships at Southwark Baths in 1907, William Bull had little competitive diving success. One of several Neptune SC divers to compete at the 1908 Olympics, Bull and his team-mates spent a lot of time giving exhibitions of acrobatic diving, largely in the south of England. Bull was also a short-distance freestyle swimmer, normally at distances of less than 100 yards, and occasionally won handicap and scratch races. Bull was also a diving judge and bizarrely, at a Gala at Holborn Baths in 1909, was one of the judges at the same meeting where he won the Open Diving Contest!