John Holt Line Ltd. / Guinea Gulf Line Ltd.

The National Maritime Museum flag, dated 1955–67 and measuring 431.8 by 609.6 mm, was initially described as black. Rosanoski queried it, and Barbara Tomlinson confirmed on 30 July 2005 that the field was blue; the catalogue was corrected. He therefore identifies the G300 version as correct in place of the museum-derived G299 FOTW rendering. Liverpool Shipping does not specify the letter colours.

Stewart’s flag has a small star; Brown 1958 shows a larger, normally shaped star like H275’s.