The company was founded in 1775 by John Aynsley in Lane End, Longton, Staffordshire.
In 1861 his grandson John Aynsley built the historic Portland Works on Sutherland Road, Longton, Staffordshire.
The company's profitability made it a desirable acquisition.
In June 1970 Spode put in a bid, this was then topped in July by Denbyware.