Prince Harry prepares to fly back to the UK: Duke is expected to meet with King ... trends now

Prince Harry will fly back to Britain over the coming hours as he attends a ceremony in London marking the 10th anniversary of the Invictus Games.

The Duke of Sussex is expected to meet his estranged father the King during his trip, which follows a previous quick visit in February after Charles's cancer diagnosis.

Tomorrow night Harry is set to give a reading at a service of thanksgiving at St Paul's Cathedral marking a decade since the inaugural Invictus Games in London in 2014.

Organisers say there has been no confirmation of any other royals attending, or if Harry's wife Meghan Markle or children Archie and Lilibet will also be in the UK. 

However it is expected that the Duke will come to London alone before joining the Duchess on a tour to Nigeria, with Meghan set to fly there from the US by herself.

And Harry is not anticipated to see his brother Prince William, who is scheduled to be away from the capital on Thursday and Friday, or his sister-in-law Kate Middleton whose cancer treatment continues following her revealing the diagnosis in March.

The Duke has invited William and other senior members of the Royal Family to the service but none of them are expected to attend, sources told Page Six.

Among the royals who could attend include his cousins Zara Tindall and Princesses Beatrice and Eugenie, but there has been no confirmation of this. Harry is expected to stay at a hotel in London because he no longer has Frogmore Cottage in Windsor.

But Charles is likely to be in London tomorrow for his usual weekly audience with Prime Minister Rishi Sunak, providing father and son with a chance to meet again.

Although Charles has been left wounded by his son's behaviour in recent years, he has always privately insisted he will keep the door open for him to at least speak.

William, however, is understood to find his brother's betrayal more difficult to forgive or even put to one side.

The Prince and Princess of Wales will be at Windsor where they have asked for privacy so that Kate can focus on her recovery from serious abdominal surgery and ongoing preventative chemotherapy for the cancer that was subsequently discovered.

It will be Harry's first visit to the UK since February when he returned for a brief trip to see his father the King following his cancer diagnosis.

It is also the first major event he has attended in Britain for some time and comes amid his ongoing a legal case about his personal security arrangements whenever he is in the UK.

It will also be Harry's first visit since the Princess of Wales revealed her cancer diagnosis.

Experts say that while he may meet his father the King, he will unlikely meet up with Kate or Prince William.