Prince William has spoken out for the first time following the broadcast of his brother Prince Harry's bombshell interview with Oprah Winfrey.

The controversial interview - broadcast earlier this week - saw Harry and wife Meghan Markle make a number of damaging allegations, including an assertion that a senior member of the Royal Family had expressed "concerns" to Harry about "how dark" his child's skin might be.

The Queen has since moved to calm the situation, issuing a statement calling the claims "concerning" and adding that they would be "addressed by the family privately".

William and his wife, the Duchess of Cambridge, were attending a school in East London on Thursday morning when they were asked by a member of the press if he had been in touch with his brother.

"No, I haven't spoken to him yet but I will do," he replied, before being asked: "Is the Royal Family a racist family, sir?"

William responded: "We're very much not a racist family."

A peak of more than 12 million viewers tuned in to watch the interview when it was broadcast in the UK on ITV on Monday night.