The Duke of Sussex has spent the last few weeks on a series of solo engagements without his wife Meghan Markle.

Prince Harry may have been sending a personal message to his father King Charles on his string of solo engagements.

The duke, 40, has spent the last few weeks travelling for engagements and has visited New York City, the UK and Africa.

Speaking on behalf of Slingo, former royal butler Grant Harrold, who previously worked for Charles explained: “Diana was a massive advocate for so many charities, and Harry has been inspired by that.

“This trip has seen Harry speak about his mother and her legacy and it’s definitely a tribute to her. But he’s also spoken passionately about climate change, which is a cause close to his father’s heart.

“I have no doubt he was honouring his father too. He loves and respects Charles and has a great deal of admiration for him. I think he’s wanted to go out there and give a nod of support to his dad and maybe he’ll hope that Charles will see this and get behind him.”

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Prince Harry may have been sending a personal message to his father at solo engagements (Image: John Nacion/Getty Images)