Her third UN tour began in June, and in July she was detached for duty with the United States Task Group on the East Coast, providing medical aid to the destroyer USS John R. Pierce after she was damaged by 75 mm shore battery fire off Songjin.

She returned to Hong Kong for flotilla duties in November, and in April 1953 began her fourth Korean tour, deployed for military support off the east coast.

In June she carried out bombardments in Ch'o-do area in support of RoK Army operations before being released from United Nations duty.

In February she detached for service in New Zealand, arriving at Auckland in March for exercises, training and patrols, returning to Hong Kong in July.

The ship was refitted at HM Dockyard, Singapore, from December 1957 to March 1958, and in April sailed to Inchon with the frigate Alert for an official visit by the Commander-in-Chief, Far East.

[1] In early 1960 St Brides Bay was detached for visits to Australia and New Zealand, calling at Fremantle and Adelaide, Auckland and Wellington, Hobart, Sydney and Cairns, before returning to Singapore in March.

In November she and Cardigan Bay sailed to Townsville, Queensland, for detached service on a Pacific islands visit programme, calling at Nouméa, New Caledonia, Suva, Fiji and Apia, Samoa.

After exercises with the Far East Fleet and Commonwealth warships she sailed for Australia in late August, calling at Brisbane, Mackay, Cairns and Darwin, before returning to Singapore in September.