The Duke of Sussex had to convince young children that he was the 'real' Prince Harry today, despite not wearing a crown.

Prince Harry joked with pupils, met the school dog and mimed his pregnant wife's baby bump as he helped plant trees to highlight the importance of the environment.

Harry mimed the shape of the baby bump of his wife Meghan, who is believed to be around six weeks away from the arrival of her first child, as he chatted to staff, children and visitors at St Vincent's Catholic Primary School in Acton, west London, on Wednesday.

But, in an adorable moment, a teaching assistant revealed that one of the young children asked him: 'When is the real Prince Harry coming?'