King Charles appears to forget who Prince Harry is after onlooker asks him to bring Prince back

King Charles has been filmed appearing to forget who Prince Harry is during a walkabout at the University of London today. 

In the short clip, the King, 74, can be seen greeting onlookers who have gathered to watch his royal visit. 

As he mingles with the public, a voice asks the King to 'bring back Harry please, can you please bring him back please?'

Without hesitating, the monarch replies: 'Who?' - before quickly realising and laughing at his own mistake, saying: 'It would be nice.'

The King then moves off in the opposite direction and the video cuts out. 

Charles appeared to be caught off guard by the question 

The question is doubtless in reference to the continued speculation as to whether Harry and wife Meghan will appear at the King's coronation this year - with no official announcement released as of yet.  

There is a 'working assumption' that the Duke and Duchess of Sussex with receive an invitation to attend the state ceremony to crown King Charles as sovereign, palace insiders told The Sun.

There had been fears that Harry and Meghan's attendance would upstage and diminish the sincerity of the high-profile ceremony - especially after revelations from their Netflix series and Harry's memoir.

But coronation organisers are continuing to plan for the event under the assumption that both Harry and Meghan will attend.

The Mail on Sunday revealed last month that the King asked the Archbishop of Canterbury to broker a deal to ensure that the Sussexes attended his coronation. 

It remains unclear if Prince Harry and Meghan will be coming back to the UK for the coronation

King Charles's slip-up comes as details of the three-day festivities for the crowning are released, including a concert to be held at Windsor Castle. 

The official crowning will take place on May 6 at Westminster Abbey where His Majesty will shun royal garb in favour of military clothing, in a bid to update the ceremony.

A procession will then lead the newly-crowned King past thousands of people who will line the streets to Buckingham Palace, where he will then join members of his family on the balcony to wave at the masses.

The next day Windsor Castle is set to host a concert which will be televised around the world, with thousands of street parties earlier in the afternoon as people gather to celebrate the occasion. 

This will be followed by a Bank Holiday on Monday, with millions of people set to get a day off work.

King Charles III's coronation: A timeline 

King Charles III, pictured here as he left the State Opening of Parliament in Westminster in 2016, is set to put his own stamp on the coronation this year

Charles was said to be happy to wear the same garments as his great-grandfather George V, pictured here in his coronation robes with his wife Mary of Teck, but aides are said to have dissuaded him from doing so

May 6

The King and Queen Consort will proceed to Westminster Abbey for the coronation ceremony.

After the ceremony they will take part in a second procession to Buckingham Palace, before appearing on the balcony.

May 7

Britons are encouraged to hold street parties and take part in the Big Lunch.

A celebratory concert will take place at Windsor Castle, featuring an exclusive performance from the Coronation Choir.

May 8

An extra bank holiday has been scheduled for May 8.

Members of the public are encouraged to spend time volunteering for charity as part of the Big Help Out.