Venus
Venus produced a motorcycle from 1920 to 1922.
This machine was very similar to almost any other of that period; the only difference being in the choice of engine used. They chose the 318cc Dalm rather than the more common Villiers. They were very short lived.
Sources of Information
The British Motorcycle Directory - Over 1,100 Marques from 1888 - by Roy Bacon and Ken Hallworth. Pub: The Crowood Press