The remarkable way the Queen welcomed Meghan Markle into the Royal Family – despite her concerns that Prince Harry was ‘perhaps a little over-in-love’ with his new partner – is today revealed in an authoritative new biography.

Broadcaster Gyles Brandreth, a close and trusted confidant of the senior royals, has disclosed in unprecedented detail how the Queen was genuinely delighted with her beloved grandson’s choice of wife, and had high hopes for the contribution she could make to public life.

But if her cordial generosity towards her future granddaughter-in-law made the Sussexes’ subsequent decision to turn their back on the UK and their royal duties any more painful, Her Majesty did not display it.

The ever-pragmatic Monarch was even sanguine about the bombshell interview the couple gave to Oprah Winfrey, expressing more concern about Harry’s wellbeing than what she dismissed as ‘this television nonsense’.