How was Helena Bonham-Carter related to H H Asquith?

Helena Bonham Carter is a great-granddaughter of H.H. Asquith, who served as the Prime Minister of the United Kingdom from 1908 to 1916. Her maternal grandmother, Violet Bonham Carter, was the daughter of Asquith. This connection places Helena within a prominent political lineage, linking her to a significant figure in British history.