Anthony Eden (1955–57)
Harold Macmillan (1957–63)
Alec Douglas-Home (1963–64)
Harold Wilson (1964–70)
Edward Heath (1970–74)
Harold Wilson (1974–76)
James Callaghan (1976–79)
Margaret Thatcher (1979–90)
John Major (1990–97)
Tony Blair (1997–07)
Gordon Brown (2007–10)
David Cameron (2010–16)
Theresa May (2016–19)
Boris Johnson (2019–22)
Liz Truss (2022 (two days ago) - current)
Quite the reign! Can't help but feel a bit sad really.
I suspect that you don't realize how bizarre this phrasing is for the vast majority of the world.
The royal family is little more then a Kabuki act at this point, no reason to throw out tradition on a whim.