He told GB News: “They (Harry and Meghan) are big celebrities here, but that’s the thing they are – they are not royals to us.
“They need to cultivate their celebrity so I think the best response for them is to say nothing and obviously don’t be upset.
“Meghan was talking recently about how she was concerned about her children on social media.
“In a way, the Sussexes are kind of like the Kardashians here – they are famous because of their names, but they haven’t really done much of note yet.