Arethusa class light cruisers

The Arethusa class of light cruisers marked a shift in the design of British light cruisers. They were smaller but faster than the various series of Town class cruisers, and were designed to operate with the destroyer flotillas.
HMS Arethusa was the name ship of the Arethusa class of light cruisers, and the only member of the class to be sunk during the First World War.
HMS Aurora was an Arethusa class light cruiser that served with the Harwich Force for most of the First World War.