LIVE: Prince Harry rushes over to London to be by King Charles's side after cancer diagnosis

Thank you for following our coverage of King Charles' cancer diagnosis. 

It has now ended for today.

You can read more about this story and more at LBC.

Earlier today LBC spoke to Tina Brown, former Vanity Fair editor and author of 'The Palace Papers'. 

She told Andrew Marr that Prince Harry has regrets about his relationship with his father, who would welcome him back. 

This is partly because recent illnesses to Kate and Charles has exposed the weakness of the King's slimmed-down monarchy. 

While Prince William is expected to step up royal duties, the family could do with another working royal. 

“I think what we’re seeing at the moment is the smaller and smaller line-up for the so-called firm, it’s a tiny boutique with hardly anyone to play," Brown told LBC.

“They’ve needed him for quite a time. 

“The problem is there’s no way in the world that William wants Harry back or feels comfortable with Harry coming back, and how they work that out is going to be painful. 

“House of Windsor needs Harry."

King Charles 'terribly' wanted a reunion with his son, Prince Harry, who feels "regret" about his relationship with his father, a royal author has told LBC. 

“But of course the greater problem is the relationship with William," she told LBC's Andrew Marr.  

“And here we have a big dilemma, because there’s no doubt Charles would love Harry back in the fold. He needs him back in the fold. 

“I think what we’re seeing at the moment is the smaller and smaller line-up for the so-called firm, it’s a tiny boutique with hardly anyone to play. 

“They’ve needed him for quite a time. 

“The problem is there’s no way in the world that William wants Harry back or feels comfortable with Harry coming back, and how they work that out is going to be painful. 

“House of Windsor needs Harry."

Prince William will return to work tomorrow as he prepares to take on more public duties in the wake of his father's shock cancer diagnosis. 

This will start with an investiture at Windsor Castle tomorrow morning before he attends a gala in London later in the evening. 

A source close to William told The Mirror: “The prince’s main focus is for his wife, who is recovering from surgery, his three children and now his father.

“There are no plans for Harry’s visit to act as some kind of vehicle for reconciliation.”

You can read more about William and Harry's frosty relationship here.

Prince Harry has arrived at Clarence House in the Mall to see King Charles.

The duke flew back to the UK from California on Tuesday, after Charles announced his cancer diagnosis.