ˌeɪˈeɪ ɹiːˈɑːɹməmənt ʌv swˈɪftʒɚɹ ɐpˈɪɹz tə hɐvbɪn ɐbˈændənd bɪkˈʌz ɪt ɹᵻkwˈaɪɚd ɐ zˈiəɹoʊ.fˈaɪv mˈɪliən pˈaʊnd kənvˈɜːʒən tʊ ˌeɪsˈiː pˈaʊɚ ænd bɪkˈʌz ðə nˈaɪntiːnhˈʌndɹɪd fˈɪfti sˈɛvən dᵻfˈɛns ɹᵻvjˈuː lˈɛd tə ðə fˈaɪnəl kˌænsɪlˈeɪʃən ʌv ˈɔːɹdɚd sˈɪŋɡəl ænd twˈɪn fˈoːɹɾi ˌɛmˈɛm ˈɛl sˈɛvənti mˈaʊnts fɚðɪ ˌɑːɹɹˈɛn ɪn fˈeɪvɚɹ ʌv ðˈɛn æz jˈɛt ʌnpɹˈuːvən ɡɹˈiːnlaɪt lˈeɪɾɚ sˈiːkæt mˈɪsəl.
AA rearmament of Swiftsure appears to have been abandoned because it required a 0.5 million pound conversion to AC power and because the 1957 Defence Review led to the final cancellation of ordered single and twin 40mm L70 mounts for the RN in favour of then as yet unproven Greenlight (later Seacat) missile.