Westfield were motorcycles produced between 1903 and 1904 by the Rising Sun Motor Works, in London.
1903 The first machine appeared with a 2¾ hp engine designed to clamp to lugs on the frame. Both valves and the sparking plug were at the front of the engine and this, plus ample fins, showed an understanding of the need for good cooling. The rest of the machine was typically primitive with pedals, belt drive and braced forks.
1904 They listed a forecar, fitted with a 3½ hp engine, similar to most others of the period.