The ship spent two weeks in Sydney before steaming back to Singapore for Christmas and the New Year. She subsequently sailed across the Indian Ocean to carry out a short stint of Beira patrol; she then sailed round the Cape of Good Hope and on across the Atlantic to carry out Sea Slug missile firings in a tactical setting with the US Navy. A short visit to St Vincent and Puerto Rico allowed the ship's company a few days ashore before "London" headed back to Portsmouth, having completed an extremely busy 12 months. There ensued docking and repairing defects in Portsmouth before carrying out workup in October and visits to Greenock before Christmas leave, prior to sailing in early February 1971 for a nine-month tour of duty in the Mediterranean. This period allowed for a wonderful opportunity for cultural visits in Leghorn (for Pisa and Florence, Civitia Vecchia for Rome and Pompeii and Naples as well as Trieste from where a visit to Venice was possible). The ship called in at Crete for the 30th anniversary of the battle in May 1941. She also called in at Cyprus and Istanbul from where a trip round the Black Sea included a visit to Samsun. The ship gave station leave in Gibraltar and Naples; returning to Portsmouth in early November 1971. In 31 months she had carried out two deployments lasting 21 months, had spent six weeks working up between deployments as well as visits to Scotland and missile firing practice at Aberforth.