Bamber motorcycles were produced from 1903 to 1905.
See Richard Bamber
Based in Southport, Lancashire, R. Bamber had a bicycle shop and cycle-making business. The company's works were in Hall Street and at the turn of the century, approximately forty mechanics were employed. In about 1903 he began to construct a number of standard looking single and V-twin motorcycles with direct-belt drive. One of his machines took part in the 1903 Southport Speed Trials
Sources of Information
The British Motorcycle Directory - Over 1,100 Marques from 1888 - by Roy Bacon and Ken Hallworth. Pub: The Crowood Press 2004 ISBN 1 86126 674 X