Thank you for the message - there does not seem to be a maker listed for your pattern - Longton is a place as opposed to a maker - it is an area in Staffordshire where many of the English potteries were to be found - In Jan Kobach & Sharon Glendenning's Flow Blue & Mulberry Handbook lll - the pattern is listed but the source of the information was from someone selling an item on Ebay at some time and there seems to be no other information - maybe someone else will pick up on the message and have a piece that is "Marked"
CWS are the initials of the Co-Operative Wholesale Society - which was a Grocery Store - 1863 Co-operative Wholesale Society (CWS) established, originally called the North of England Co-operative Wholesale Industrial and Provident Society Limited; you would have been able to purchase the dinner set piece by piece - They still exsist today as supermarkets etc. but are known as The Co-Operative or Co-Op. They have a history web site - http://www.co-operative.coop/aboutus/ourhistory - they did several items of china in different designs and would have had them made at the Staffordshire Potteries - Jackie
