The Duchess of Sussex’s estranged father has said that he hopes his grandson will “serve with dignity”, as he sent his best wishes to his daughter.

Thomas Markle, 74, congratulated his daughter with a statement issued from his coastal retirement bungalow near the Mexican city of Tijuana.

He was not named on the official list of those informed by the royal couple, meaning that he most likely found out from the news reports – as he did when the Duchess of Sussex announced her pregnancy. That time, he learnt via a radio report, as he was in a Tijuana traffic jam.

"I am proud that my new grandson is born into the British royal family and I am sure that he will grow up to serve the crown and the people of Britain with grace, dignity, and honour,” said Mr Markle on Monday.

"God bless the child and I wish him health and happiness, and my congratulations to my lovely daughter Duchess Meghan and Prince Harry, and God save the Queen."