ðɪ ˈɜːbən dˈɪstɹɪkt bɪkˌeɪm ɐ mjuːnˈɪsɪpəl bˈʌɹoʊ ɪn nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi sˈɪks ænd ɪn nˈaɪntiːnhˈʌndɹɪd sˈɪksti fˈaɪv ɪts fˈɔːɹmɚɹ ˈɛɹiə wʌz tɹænsfˈɜːd tə ɡɹˈeɪɾɚ lˈʌndən.
The urban district became a municipal borough in 1936 and in 1965 its former area was transferred to Greater London.