'Royal Family wouldn't want Harry there' Denise Welch wades into birthday row and backs Meghan and Harry - 'did what was right for him'

However, a spokesperson for the Sussexes dismissed the claims by the publication, instead claiming it was Harry who was snubbed and not invited in the first place.

They told GB News: "In response to UK media headlines, there has been no contact regarding an invitation to His Majesty’s upcoming birthday. It is disappointing the Sunday Times has misreported this story."

GB News also understands Harry and his wife Meghan Markle have not received an invite to spend Christmas with the Royal Family either.

Welch - who was speaking to GB News following research conducted by the Co-op which shows a 70 percent increase in prenup requests among couples - has now defended Harry in light of the mixed reports.

When asked if Harry would be within his rights to turn down an invite as per the Sunday Times' claims, Welch said: "According to what I've read this morning, he wasn't invited - so it depends which way you look at it.

"I think family is family until it's not. And I think it's a shame that things have taken the turn they have.

"You know very clearly where I stand on Harry and Meghan, I'm a huge supporter of them.

"I think that Harry did what was right for him and for his wife's mental health - I had severe postnatal depression, Princess Diana had severe postnatal depression, Meghan Markle had postnatal depression, there is nothing more horrific and horrendous.

WATCH NOW: Denise Welch defends Meghan Markle over broken family ties 

"And it opened up a 30-year battle with a major depressive disorder in me. So people's mental health (and) mental illness is where I would always prioritise."

Referring specifically to the King's upcoming birthday, Welch continued: "Let's be honest, Harry wouldn't want to be there and nobody would want Harry there. What would be the point of going? There's just no point.

"It's not the right time. I can't even understand why there's any press about it. I don't think it's a surprise at all. He wouldn't be welcome at his father's 75th, I would imagine, by a lot of people (although) I'm not saying by his dad."

On whether the King would've liked to have welcomed his son, Welch continued: "I think he probably would. But you know, as we all know, there are other people making decisions in the Royal Family that are probably out of the King's hands no matter how powerful he is.

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"So I just think that at the moment, Harry and Meghan are doing what's right for them and for their children, and I am a huge supporter of them."

Elsewhere in the interview with GB News, Welch reflected on why she's joined forces with the Co-op in light of research carried out which shows a rise of 70 percent in prenuptial agreement requests.

"I think we've always known about prenups but we've always historically - I certainly have thought of it as something that happens to really rich movie stars, who then meet someone who isn't quite as rich and they want to have a prenup so that the not-so-rich person can't take all their money if they get a divorce," Welch recalled.

She continued: "But actually, it's much more simplistic than that, and much more relevant to us now as an insurance policy.

"So I look at as when you get married or move in with your partner, you get a house together and you look at the logistics of insurance, and you don't think that your house is going to burn down but you're prepared to spend an amount of money on ensuring just in case those things happen.

"I've been divorced twice, I was very fortunate that for all the trauma of divorce, division of assets wasn't an issue.

"But I have seen people who say, 'Oh, I'm getting divorced, but it's completely amicable'... Although I'm never sure it can be - it's a bit of a paradox in a way, but at the same time, there can be more friendly divorces until, of course, the lawyers come in.

"If you have a prenup, it is basically deciding how that division of assets will work, it's just a joint decision about dividing the assets because when the lawyers step in, and the court step in, they then decide who gets what.

"So to me when it was explained to me as simplistically as that, it's something that I will definitely be saying to my children to consider.

"I think people are just aware that the romantic idea of, 'This will last forever' - and it can and you hope that it will - but it just might not. And if you have this in place, then it's just going to be less heartache at what can be a traumatic time."