Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,107 pages of information and 233,634 images on early companies, their products and the people who designed and built them.
of St Austell
1862 London Exhibition 
1897 was H. W. Higman and Co and Philip Wheeler and Co (see advert)
By 1914 was Philip Wheeler and Co and John W. Higman and Co