The house flag of Devitt & Moore, London. The flag is made of wool bunting, machine sewn with a linen hoist. A rope and wooden toggle is attached. Possibly used on 'Port Jackson' 1883.

A rectangular flag divided quarterly red and blue bearing a white rectangle in the centre.

Devitt & Moore was a London shipping company founded by Thomas Henry Devitt and Joseph Moore in 1836. It became best known for carrying passengers and cargo between Great Britain and Australia from 1863 until the end of the First World War, mainly in sailing vessels, but also went into steam. In 1917 based on a scheme begun in 1890 to train boys to serve as officers in the company ships, Sir Thomas Lane Devitt founded Pangbourne Nautical Training College, near Reading. Now a less nautically focused independent school, Pangbourne College, it still uses this design as a flag and emblem. Devitt & Moore itself wound up in 1931, and the Devitt interests diversified into insurance. One of the Devitt & Moore sailing ships still survives, the 'City of Adelaide' (later 'Carrick'),which after a long but unsuccessful attempts to preserve it on the Clyde, where it was built in 1864, was moved to Adelaide, South Australia, for this purpose in 2013-14. For a history of the company see Captain A.G. Course's book 'Painted Ports' (1961).