Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,101 pages of information and 233,633 images on early companies, their products and the people who designed and built them.
On 9th July 1900, the Dowlais Iron Company, Guest and Co both associated with Lord Wimborne, and the Patent Nut and Bolt Co, chaired by Arthur Keen, merged to form Guest, Keen and Co . The company was registered
1901 Listed as Guest, Keen and Co (formerly the Patent Nut and Bolt Co) of Birmingham and the Cwmbran Ironworks. 
Acquired Crawford Brothers
1901 1st AGM held