Prince Harry has attended a summer party to celebrate the 10th anniversary of his charity, Sentebale.
The charity works with Aids orphans and disadvantaged children in the African kingdom of Lesotho.
The Prince established Sentebale, which means 'forget me not' in the local Basotho dialect, after spending two months in the impoverished African kingdom of Lesotho during his gap year in 2004, when he saw for himself the impact of AIDS in the community.
Two years later, he returned to the landlocked region to set the foundations for the organisation.
His commitment to Sentebale is also in honour of his mother the Princess of Wales who was committed to the fight against AIDS.
According to latest statistics, 23 per cent of the country's entire population – around 360,000 people - are infected with HIV. Of those, 38,000 are believed to be children.
150,000 youngsters – one in three - have been left orphans as a result of the epidemic.
Lesotho now has the third highest prevalence of the disease in the world with the average life expectancy of people living there just 48.7 years.
As well as its nationwide programme of education and support, Sentebale has been raising funds to build the Mamohato Children's Centre to provide emotional and psychological support to children affected by HIV and Aids.
The fourth in line to the throne was this evening greeted by his friend and the charity's co-founder, Prince Seeiso, a member of Lesotho's ruling family.
Prince Harry will give a speech and hand out awards honouring key individuals and organisations that have supported his charity over the past decade, at the event at the Dorchester Hotel
Singer Joss Stone, who recently visited some of the charity's projects in Africa and will entertain fellow guests, along with magician Troy and singer Beverley Knight.
Prince Harry's cousin Peter Phillips and his wife Autumn were also among the guests.
Harry recently gave up his job as a frontline Apache helicopter pilot to take a London-based desk job with the army, enabling him to concentrate on his royal duties and charitable initiatives.