Please add the following printers:
Charles Skipper & East, London, England
Major & Knapp, New York, United States of America (1864-1884)
John Scott, Glasgow, Scotland
Barclay & Fry, London, England (1855-1922)
Security Plant Complex of the BSP, Quezon City, Philippines (1978-to date)
Probably City Press, Bahamas for this: https://en.numista.com/catalogue/note253961.html see bottom left corner
Modifications needed for printers already added:
American Bank Note Company has two offices in Ottawa and New York and was established in 1795
Perkins, Bacon and Petch was also named Perkins, Bacon and Co. (1820-1935)
BA International Inc. formerly known as British American Banknote Company Limited (established in 1866) should be split because it had two offices in Montreal and Ottawa
De La Rue (Thomas De La Rue & Co.), London, England (1821- to date) TDLR this is not added at the moment I write this but there is already a thread asking for it
LE:
Note Printing Australia (1998 - to date)