The 3rd Battle Squadron was a naval squadron of the British Royal Navy consisting of battleships and other vessels, active from at least 1914 to 1945. The 3rd Battle Squadron was initially part of the Royal Navy's Home Fleet. During the First World War, the Home Fleet was renamed the Grand Fleet. During the Second World War, the squadron covered Atlantic convoys.

HMS King Edward VII, named after King Edward VII, was the lead ship of her class of pre-dreadnought battleships built for the British Royal Navy. Armed with a battery of four 12-inch (305 mm) and four 9.2 in (234 mm) guns, she and her sister ships marked a significant advance in offensive power compared to earlier British battleship designs that did not carry the 9.2 in guns. King Edward VII was built at the Devonport Dockyard, and was laid down in March 1902, launched in July 1903, and completed in February 1905.