At the time, Tory MP Jacob Rees-Mogg said: “If there were a plan to bring the King in before there is domestic political agreement, it would border on constitutional impropriety.”
Article source: https://www.huffingtonpost.co.uk/entry/rishi-sunak-sparks-anger-by-advising-king-to-meet-von-der-leyen_uk_63fc9b03e4b0db7a1f66e3a9