In 1914 the Royal Navy was by far the most powerful navy in the world. The Royal Navy's basic responsibilities included policing colonies and trade routes, defending coastlines and imposing blockades on hostile powers. The British government took the view that to do all this, the Royal Navy had to possess a battlefleet that was larger than the world's two next largest navies put together.
By early 1914 the Royal Navy had 18 modern dreadnoughts (6 more under construction), 10 battlecruisers, 20 town cruisers, 15 scout cruisers, 200 destroyers, 29 battleships (pre-dreadnought design) and 150 cruisers built before 1907.
After the outbreak of the First World War, most of the Royal Navy's large ships were stationed at Scapa Flow in the Orkneys or Rosyth in Scotland in readiness to stop any large-scale breakout attempt by the Germans. Britain's cruisers, destroyers, submarines and light forces were clustered around the British coast.
The Mediterranean fleet, of two battlecruisers and eight cruisers were based in Gibraltar, Malta and Alexandria. These were used during the operations to protect Suez and the landings at Gallipoli. There were also naval forces in Canada, Australia and New Zealand.