kəntˈɪnjuːd ɹᵻlˌaɪəbˈɪlᵻɾi ˈɪʃuːz ɹɪzˈʌltᵻd ɪn nˈaɪntiːnhˈʌndɹɪd sˈɛvənti θɹˈiː ɪnðɪ ɛkstʃˈeɪndʒ, ˌɔn ɐ wˈʌnfɔːɹwˈʌn bˈeɪsɪs, ʌv nˈaɪnti wˈʌn bɹˈɪstəl vˌiːˌɑːɹtˈiːz fɹʌm sˈɛntɹəl ˌɛsˌɛmtˈiː, ˈiːstɚn skˈɑːɾɪʃ ænd wˈɛstɚn ˌɛsˌɛmtˈiː fɔːɹ fɹˈʌntˈɛndʒɪnd bɹˈɪstəl lˈoʊdkə ˌɛfˌɛlˈɛf sˈɪks dʒˌiːˈɛs fɹʌmðə nˈæʃənəl bˈʌs kˈʌmpəni, ɐ mədʒˈɔːɹᵻɾi ʌv ðiːz bˌiːɪŋ sˈɛnt fɹʌm ˈiːstɚn kˈaʊntiz.
Continued reliability issues resulted in 1973 in the exchange, on a one-for-one basis, of 91 Bristol VRTs from Central SMT, Eastern Scottish and Western SMT for front-engined Bristol Lodekka FLF6Gs from the National Bus Company, a majority of these being sent from Eastern Counties.