Between 1966 and 1967 she was fitted with experimental satellite communication equipment and stabilisers for trials. In 1968 she took part in 'Navy Days' at Portsmouth Dockyard and at this time was part of the 2nd Frigate Squadron. On 31 October 1967 she escorted the RMS "Queen Mary" out of Southampton on her final voyage to Long Beach for retirement. HMS Wakeful (Commanded by Lt.Cdr.David Whitehead) also went up the Ouistreham Canal for the 25th Anniversary of D Day in June 1969. Later that year she was replaced by . and Lieutenant Commander David Whitehead was transferred to HMS Grenville as her new commanding officer at this time.