My mother in law's online estate auction (Sergeant auction part 6) has several pieces of flow blue. One pattern is Touraine by Henry Alcock & Co and Stanley Pattery Co England. Another is Clayton by Johnson Bros England. Here is the link to the auction:
http://midwestliquidationservices.hibid.com/ Mom was an avid collector of antique glass so there are many interesting and rare pieces. Thank you! Julie