The offering is said to have been something the late Queen ‘would have loved’.

The reportedly fractious relationship between Prince William and Princess Kate and the Sussexes doesn’t appear to show any signs of improving, but there have been glimmers of hope in the past, a royal author has claimed.

Revelations in book and TV form from Prince Harry and Meghan are said to have driven the once close quadruple of royals apart in recent years.

However, during the most seismic event of recent royal history, the death of Her Majesty Queen Elizabeth II, there was reportedly a gesture made by Princess Kate and Prince William that may show all is not lost for the future.

OK! reports as the Royal Family awaited arrangements for the funeral of the Queen, an informal supper brought together the feuding couples.

In the new book, ‘Charles III. New King. New Court. The Inside Story’, author Robert Hardman writes that William and Kate made a small conciliatory gesture, which would have been approved by Elizabeth II.

The author wrote: “Inside the palace, all members of the Royal Family were there to welcome the Queen back to royal headquarters for the last time, followed by an informal supper.