ɐn ˌɛmpˈiː hˌuː wˈɪʃᵻz tə ɹɪzˈaɪn hɐz fˈɜːst tʊ ɐksˈɛpt ɐn ˈɑːfɪs ʌv pɹˈɑːfɪt ˌʌndɚ ðə kɹˈaʊn, ðˈʌs vˈeɪkeɪɾɪŋ ðɛɹ sˈiːt.
An MP who wishes to resign has first to accept an office of profit under the Crown, thus vacating their seat.