ɪn kˈɑːmən wɪð ˈɔːl ˈʌðɚ bɹˈɪɾɪʃ ˈɛɹiə kˈoʊdz ðɪ ɪnˈɪʃəl zˈiəɹoʊ ɪz ɐ tɹˈʌŋk pɹˈiːfɪks ðæt ɪz nˌɑːt ɹᵻkwˈaɪɚd wɛn dˈaɪəlɪŋ lˈʌndən fɹʌm ɐbɹˈɔːd.
In common with all other British area codes the initial '0' is a trunk prefix that is not required when dialling London from abroad.