Following the Railways Act 1921 Warren Hill station was operated by the London and North Eastern Railway from 1 January 1923.
fˈɑːloʊɪŋ ðə ɹˈeɪlweɪz ˈækt nˈaɪntiːnhˈʌndɹɪd twˈɛnti wˈʌn wˈɔːɹən hˈɪl stˈeɪʃən wʌz ˈɑːpɚɹˌeɪɾᵻd baɪ ðə lˈʌndən ænd nˈɔːɹθ ˈiːstɚn ɹˈeɪlweɪ fɹʌm wˈʌn dʒˈænjuːˌɛɹi nˈaɪntiːnhˈʌndɹɪd twˈɛnti θɹˈiː.