he house flag of Cable and Wireless (Marine) Ltd, London. A blue flag with a yellow motif of an arrow circling a globe. The flag is made of a synthetic fibre bunting with the device appliquéd in nylon fabric. It has a cotton hoist and a rope and wooden toggle is attached.

The Imperial wireless and cable conference of 1928 recommended the foundation of a holding company and an operating company combining wireless and cable interests, in order to keep the strategically important but unprofitable undersea cables in British hands. This was achieved through a merger of the communications interests of the cable companies and Marconi. The resulting company began as Imperial and International Communications Ltd but changed its name to Cable and Wireless Ltd in 1934. The Cable and Wireless Marine Service originated in the cable laying and repairing activities of the original telegraph companies.