Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 144,950 pages of information and 230,620 images on early companies, their products and the people who designed and built them.
of St. Stephens Street, Birmingham. Telephone: Central 7680. Cables: "Effort, Birmingham". (1929)
of Camp Lane Handsworth, Birmingham, 21. Telephone: Birmingham Northern 1227. Cables: Ditto. (1947)
1888 This company was based in Birmingham and had been founded in 1888. They originally made bicycles for adults but the market for children's tricycles and bicycles grew so much that they later stopped production of full sized bikes.
1929 Listed Exhibitor - British Industries Fair. Manufacturers of Children's Bicycles and Tricycles, Metal Scooters. (Stand No. E.27) 
During the period between the First and Second World Wars, Lines Brothers acquired The Unique and Unity Cycle Co.
1947 Listed Exhibitor - British Industries Fair. Manufacturers of "Unity" Juvenile Cycles, Fairy Cycles, "Tri-ang" Tricycles; made in Britain's Most Modern Juvenile Cycle Engineering Factory from all British Materials. (Olympia, 3rd Floor, Stand No. H.2181) 
1959 Introduced new model bicycles and trikes for children