On 23 July 1954 she re-commissioned for service with the 2nd Training Squadron at Portland, where she was employed for trials of anti-submarine equipment. In March 1958 she commissioned for service with the 6th Frigate Squadron. She was fitted with a flight deck in 1959 and became the first small ship in the Navy trials to carry an anti-submarine helicopter - the naval version of the Saro P.531, later developed into the Westland Wasp. The Wasp's main role was for anti-submarine warfare. She was also briefly fitted in 1959 with three fixed tubes for anti-submarine torpedoes, but these tubes were later removed.