In January 1940 "Echo" was deployed with the 12th Flotilla at Scapa Flow for minelayer escort and patrol duties. In May she was deployed to support military operations in Norway. In August she escorted ships of the 1st Minelaying Squadron on several operations, and on the 28th was detached for duty with the Free French expedition to Dakar (Operation Menace). After the operation was abandoned on 25 September, she escorted the damaged battleship to Freetown, where "Echo" was retained for local convoy defence, not rejoining the Flotilla until the end of October.