The Devonshire-class cruiser was a group of six armoured cruisers built for the Royal Navy in the first decade of the 20th century. All ships of the class served in World War I. Argyll was wrecked, and Hampshire was sunk by a naval mine. The four survivors were disposed of soon after the war.

The Monmouth class was a ten-ship class of 10,000-ton armoured cruisers built around 1901 to 1903 for the Royal Navy and designed specifically for commerce protection. The ships were also referred to as County class cruisers as they carried the names of British counties.