Meghan Markle and Harry blasted for latest 'rude' behaviour to Royal Family

Invitations for the Coronation were sent out earlier this year, with guests asked to confirm their attend cane by the start of last week.

However, the Duke and Duchess of Sussex have left Buckingham Palace in the dark about their intentions.

Speaking on GB News, Heydel-Mankoo was asked if he felt the couple were being rude for not making clear if they were attending.

The leading royal commentator said: "It's absolutely rude. This whole entire will they or won't they drama is actually getting really tedious now. That is precisely what the King and the Royal Family don't need.

"I think, Harry and Meghan seem to be confusing the coronation with Coronation Street because this isn't a soap opera.

"This is a hugely important constitutional and ceremonial event, not just for Britain or the British. People, but for all of the Commonwealth realms, including Australia.

"Harry and Meghan, through all of this I think, are just showing the world how childish, self centred and self obsessed they are.

"It's actually, I think, a shameful publicity ploy by and they're milking this for all it is worth. They know that essentially with their distance from the royal family they're becoming increasingly uninteresting to the public at large, increasingly irrelevant. This is a way to keep them in the headlines and on the front pages.

"It actually makes them seem to be powerful with the Royal Family seemingly trying to entice them over the pond. But, this is really quite narcissistic because at the end of the day, this is about celebrating the King. All attention must be on the monarchy and on the King."

Commenting on whether he thinks the King wants them to attend he continued: “Well, the view from the Palace seems to be that having them not attend is worse than actually having them attend. Now opinions may differ on whether that is right or not, but certainly there's no precedent for the son of a King not attending.

"I think the King wants to basically be seen to be always open, you know, wishing for his prodigal son to return. You know, he is the head of the head of the Church of England and nothing could be more Christian than to always have a door open.

"But this really does just deflect so much from what should be an occasion for building national unity, building a sense of social cohesion through street parties and so forth.

"And yet, rather than focusing on what it means to be British and the important role of the coronation in our constitution, we're instead being distracted by these tedious sort of typical title tattle stories."