The house flag of Trader Navigation Co. Ltd, London. A red rectangular flag with a white disc in the centre bearing a black letter 'T'. The flag is made of a wool and synthetic fibre bunting. It has a cotton hoist and is machine sewn. A rope and toggle is attached.

The company was formed in 1936 by the grain merchants and merchant bankers Bunge & Co. Their first tramp vessel was of the 'ARCFORM' type, designed by Sir Joseph Isherwood for economy of hull form during the depression. She was re-named 'English Trader'. All the company's later vessels had the same suffix. By 1970 it was far more economical to charter rather than to own vessels and the company sold off all its ships except 'Essex Trader'. The firm was taken over by the Bostrom Group of Sweden in 1971 and the company name was dropped in 1975.