The house flag of Cory Brothers, Cardiff. A rectangular flag divided horizontally into white over green. A pink Welsh dragon is in the centre holding two overlapping black diamonds with a white diamond in the centre stitched with the inscription 'CORY BROTHERS'. The flag is made of a wool and synthetic fibre bunting. It has a cotton hoist and is machine sewn. A rope and toggle are attached. The dragon and black diamonds are a reference to their coaling activities.

Cory Brothers was a shipbroking and coal exporting business that grew out of Richard Cory and Sons, founded in Cardiff Docks in 1842. Richard Cory’s eldest sons, Richard and John, succeeded in the business as Cory Brothers. In 1871 offices were set up in London, and agencies established in Liverpool and Newcastle. The company invested heavily in the mining industry in South Wales, enabling them to set up a chain of coal depots in ports along main international trading routes.

In 1921 the company purchased extensive property by the Thames and erected an oil installation. Similar installations were built at Port Said and Las Palmas, and oil facilities were incorporated into some of the existing coal depots. Further diversification occurred after the war with Cory Brothers investing in all forms of travel, as well as shipping and rail activities, engineering, chemicals, fuel sales and cars. In July 2003, the company was acquired by the Braemar Seascope Group, and was restructured to concentrate on shipping services.