Keir Starmer est né le 2 septembre 1962 à Londres, Angleterre, Royaume-Uni. Il est marié avec Victoria Alexander depuis le 6 mai 2007. Lui et Victoria Alexander ont deux enfants.
[in his victory statement as newly elected Labour leader] Antisemitism has been a stain on our party. I have seen the grief that it's brought to so many Jewish communities. On behalf of the Labour Party, I am sorry. I will tear out this poison by its roots and judge success by the return of our Jewish members and those who felt that they could no longer support us. [April 2020]