The Queen congratulated her grandson Prince Harry on his work for an African charity while visiting a garden inspired by the organisation at the Chelsea Flower Show.

The two warmly greeted each other with a kiss on the cheek and were joined by other members of the royal family including Prince Philip and Prince Charles.

Fresh from a tour of Australia and New Zealand, the 30-year-old prince was showcasing his Sentebale Hope In Vulnerability garden, designed to capture the spirit of Lesotho, where his HIV charity operates.

The Royal Horticultural Society (RHS) Chelsea Flower Show takes place at the Royal Hospital in Chelsea and will run from 19-23 May.