Britain's future celebrities 

Source: LA Galaxy's David Beckham and his wife Victoria pose at a party at the Museum of Contemporary Art in  2007, file photo

Madonna and David Beckham's sons are forecast to become the richest celebrities in Britain.

Youngsters Rocco Ritchie, 9, and Cruz Beckham, 4, are tipped to have the most earning power in a new report which assessed the estimated worth of today's celebrity children in 20 years time.

Rocco, son of the Celebration singer and film director Guy Ritchie, topped the four categories in the report - star quality, likely inheritance, talent and love of the camera - getting ratings of ten out of ten for each.

The report also estimated Rocco to be worth 376 million pounds before he reaches 30.

"Rocco will earn a fortune from his mother and a fair bit from dad. But it's the other three rankings that power him to the number one place," celebrity expert Mark Frith said.
 
Cruz, whose mother is former Spice Girl turned fashion designer Victoria Beckham, beat siblings Romeo, 7, and Brooklyn, 10, to second place in the list.

Both Rocco and Cruz scored highly because they have been spotted dancing at their mother's concerts.

None of Rocco's other siblings - sister Lourdes and adopted brother and sister David and Mercy - featured on the list.

British royals, Princes William and Harry, came ninth and tenth on the list, compiled by Cartoon Network, with estimated fortunes of just under 200 million pounds each, but were both embarrassingly awarded zero out of ten for showbiz talent.

Cartoon Network's Power Pups of the Future, top 10 future celebs:

1. Rocco Ritchie 376 million pounds
2. Cruz Beckham 341 million pounds
3. Damian Hurley 330 million pounds
4. Coco Sumner 315 million pounds
5. Lizzy Jagger 310 million pounds
6. Junior Andre 302 million pounds
7. Romeo Beckham 271 million pounds
8. Brooklyn Beckham 251 million pounds
9. Prince Harry Wales 198 million pounds
10. Prince William Wales 178 million pounds