It essentially mirrored the set-up in Great Britain, with the Permanent Secretary of the Ministry of Finance becoming the Head of the Northern Ireland Civil Service.
ɪɾ ᵻsˈɛnʃəli mˈɪɹɚd ðə sˈɛtˌʌp ɪn ɡɹˈeɪt bɹˈɪtən, wɪððə pˈɜːmənənt sˈɛkɹətɹi ʌvðə mˈɪnɪstɹi ʌv fˈaɪnæns bᵻkˈʌmɪŋ ðə hˈɛd ʌvðə nˈɔːɹðɚn ˈaɪɚlənd sˈɪvəl sˈɜːvɪs.