Meghan and Harry's Nigeria tour could deepen distrust between Sussexes and Royal Family - analysis by Cameron Walker

Nigeria competed in the Invictus Games for the first time last year, and one day hopes to host the sporting competition that helps rehabilitate wounded veterans.

Prince Harry founded the Invictus Games in 2014 when he worked with the now Prince and Princess of Wales and the Royal Foundation.

On the surface, Prince Harry and Meghan's diary of events is very similar to a royal tour, and the reception has been very warm towards the couple so far.

Meghan was in her element, up on a school stage, encouraging students to look after each other and their mental health.

The Duke and Duchess were visiting Lightway Academy in Abuja, the capital city of Nigeria, which was hosting a mental health summit run by local non-profit GEANCO which Harry and Meghan's Archewell Foundation is linked to.

Other events in the diary include a training session with injured and sick military personnel, a reception for military families and a Women in Leadership event.

If The Duke and Duchess of Sussex were still working members of the Royal Family, they would likely be officially representing The King in Nigeria - a Commonwealth nation.

Nigeria's Defence Headquarters reportedly said it was "honoured" and "delighted" after Harry and Meghan accepted the invitation to visit and this praise could, once upon a time, be reflected back on the British monarchy.

The reality, however, is very different.

Prince Harry and Meghan are going it alone, and have not seen King Charles in person for some time.

There was a real sense of optimism when Prince Harry married Meghan; they could have proved a real asset for the ancient institution as a modern flare who could relate to Commonwealth realms and drum up support for Britain abroad.

Instead, a messy exit as working members of the Royal Family has left a void of distrust.

I suspect royal eyebrows have been raised by Prince Harry and Meghan's, so far successful, Nigeria visit.

King Charles, as Head of the Commonwealth, has not had a chance to visit Nigeria yet and now his estranged son and fifth in line to the throne has accepted an invitation from Nigerian officials.

The visit has also, unfortunately, overshadowed Prince William's first visit as Duke of Cornwall to the Isles of Scilly.

It is a rumoured favourite holiday spot for The Prince and Princess of Wales and their three children, and William started the day with a swim.

The Prince is now the islanders' landlord and was learning about how residents were gearing up for the busy summer tourist season in the brilliant sunshine.

Meanwhile, in Nigeria, it is understood the Duchess of Sussex is keen to learn more about her African heritage - revealing in her podcast 'Archetypes' that her mixed-race heritage includes 43% Nigerian.

Prince Harry and Meghan's three-day visit to Nigeria is another sign the couple want to rid themselves of their 'privileged victim' narrative following Harry's memoir 'Spare' and the Netflix series documenting their exit from the Royal Family.

Instead, Harry and Meghan appear to be focusing much more on humanitarian issues they care about, and being far more diplomatic in the statements issued to the press.

There is still a very long road to go down, however, with opinion polls in the United Kingdom showing the couple remains deeply unpopular with the British public.

Prince Harry's relationship with King Charles and Prince William appears to remain frosty, and it is thought trust is one of the key issues they need to work through.

If it is Prince Harry and Meghan's ambition to improve their global popularity, there could be a few family creases to iron out first.