"Duncan", "Diana", "Duchess", "Delight" and "Daring" were transferred to the Home Fleet in December 1939, although "Duchess" was rammed and sunk on 10 December by the battleship that she was escorting. "Duncan" was so badly damaged in a collision with a merchant ship in January 1940 that her repairs required six months to complete. "Daring" was sunk by the on 18 February while escorting a convoy from Norway. "Diana" and "Delight" were assigned to convoy escort duties in early 1940, before participating in the Norwegian Campaign in April–June. While attempting to sail through the English Channel in daylight, contrary to orders, "Delight" was sunk by German aircraft on 29 July. After a brief refit in July–August, "Diana" was transferred to the RCN to replace HMCS "Fraser" which had been sunk in a collision by a Royal Navy cruiser. Recommissioned on 6 September and renamed HMCS "Margaree", the ship was assigned to convoy escort duties in the North Atlantic. On 22 October, she was sunk in a collision with the freighter .