She was refitted with gas turbine engines as part of the development of that powerplant for the Royal Navy. A Rolls Royce Olympus of 15,000 shp for full power and two Rolls Royce Proteus (3,500 shp each) for cruising. During the 1970's, she carried out extended trials to validate the feasability of all gas turbine propulsion. These took her to the Med where she took part in various trials and exercises based on Malta. She got as far east as Crete which made her the only Type 14 to get this far east. She acted as plane guard for HMS Ark Royal and was involved in the search for survivors when a Russian destroyer lost 3 men overboard whilst making a close pass ahead of Ark Royal whilst the latter was at flying stations. (They were never found). She eventually returned to her home base port of Chatham. The trials were ultimately successful and she then went to Portland as a day runner in the 2nd Frigate Squadron providing support for ships working up under Flag Officer Sea Training. This was to prove her propulsion in a stop start scenario - basically press the button - start the engines and sail which was much less time consuming than flashing up a steam plant. Again, this proved a success and she became the forunner of an all gas turbine fleet with the Type 42 destroyers, Type 21, 22 and 23 frigates all using propulsion systems based on the configuration that had been successfully proven in Exmouth.