Blyth & Sons Manufacturers, based at 4 Chiswell Street, London. David Blyth started the firm in the early 1800’s – it was later carried on by his son James, and eventually closed in the early 1900’s. The firm’s primary address was 4-7 Chiswell Street in London. At one point they held warrants as suppliers to the Admiralty and the King of Siam (or at least that’s what their letterhead said…). They apparently opened a 2nd location in Liverpool for a period of time. Information