A great-grandmother celebrated her 100th birthday by jumping out of a plane thousands of feet above South Africa, international media report.

Georgina Harwood performed her daredevil feat over Cape Town to raise money for the National Sea Rescue Institute.

The centenarian has completed three jumps since turning 92 and next week is planning to go cage diving with sharks.

'It was wonderful, it was exhilarating,' said Mrs Harwood, who was accompanied by more than a dozen relatives.

'I'm trying to think of adjectives to add but it's difficult - there are so many. It was special.'