The Alarm-class torpedo gunboat was the penultimate class of torpedo gunboat built for the Royal Navy. The class was contemporary with the early torpedo boat destroyers, which were faster and thus better suited to pursuit of enemy torpedo boats. By World War I the class had either been sold, converted to submarine depot ships or minesweepers, or reduced to harbour service. Three of the class were lost during World War I while serving in the minesweeping role.

The Sharpshooter-class torpedo gunboat was a class of torpedo gunboat built for the Royal Navy in the late 19th century. One of the class was hulked in 1904, seven were scrapped before World War I and five were converted to minesweepers. Of these minesweepers, Seagull was lost to a collision in 1918 and the rest survived the war to be broken up in the early 1920s.