ɪn nˈaɪntiːnhˈʌndɹɪd fˈɪfti fˈaɪv, ˈɑːpənhˌaɪm wʌz ɐpˈɔɪntᵻd ɐn ˈɑːfɪsɚɹ ʌvðɪ ˈɔːɹdɚɹ ʌvðə bɹˈɪɾɪʃ ˈɛmpaɪɚ, ænd mˌeɪd ɐ nˈaɪt ʌvðɪ ˈɔːɹdɚɹ ʌvðə θˈɪsəl baɪ hɜː mˈædʒᵻsti, kwˈiːn ᵻlˈɪzəbəθ ɹˌoʊmən tˈuː.
In 1955, Oppenheim was appointed an Officer of the Order of the British Empire, and made a Knight of the Order of the Thistle by Her Majesty, Queen Elizabeth II.