Richard Douglas Cayley, DSO & Two Bars (6 October 1907 – 8 January 1943) was one of the most decorated British submariners of the Second World War.
His grandfather was Henry Cayley, who served as a surgeon and physician with the British Army in India and as honorary surgeon to both Queen Victoria and King Edward VII.
In the early years of the Second World War submarines under his command, particularly HMS Utmost, sank some 70,000 tons of enemy shipping, and attacked Italian cruisers, supply ships and troop transports, mainly in the Mediterranean.
On one occasion 84 depth charges were dropped in a counter-attack, but HMS Utmost escaped undamaged.
[6][7][8][9][10] In March 1943 the presumed loss of HMS P311, with Richard Cayley on board, was announced.