1814 - Ash & Son - silversmith and jeweller, 64 St James Street, London, entered an assay mark with S. and S. E. Ash;

1820 - Claudius Ash first made dentures for Ash & Sons, 64 St James’s Street, Westminster, London and company moved to 9 Broad Street, London and became C. Ash & Sons;

1835 - C Ash, 9 Broad Street, Golden Square, London; 1840 - manufacturer of mineral teeth;

1844 - C Ash & Sons, 9 Broad Street, Golden Square, London. Manufacturers of mineral teeth;

1865 - Claudius Ash & Sons, 7, 8, & 9, Broad (now Broadwick) Street, Golden Square, London (catalogue);

1924 - merged with de Trey & Company to form the Amalgamated Dental Company;

2009 - Claudius Ash is a division of Plandent Limited and part of the Planmeca Group/Plandent Division, and based in Potters Bar, Hertfordshire, England