The new hopeful for British tennis has only had a UK passport for four months, it emerged today.

Laura Robson, 14, who won the Wimbledon girls' title this year, played all her matches for her native Australia until February.

Laura, who now lives close to the All England Club in Wimbledon, came to this country at the age of six.

Her father, Andrew Robson, obtained his British passport in February, which enabled Laura to apply for UK citizenship.

Now both she had her dad hold dual British and Australian nationality, while her mother, Kathy, still travels using an Australian passport, the Mail on Sunday reported.

Left-handed Laura won the final of the girls' competition last weekend in a 6-3, 3-6, 6-1 match.

She was instantly hailed a national hero as the first British winner of the title since Annabel Croft's victory 24 years ago.

She holds four other junior tennis titles as an Australian.

Laura is tipped to earn more than £10million from tennis and sportswear endorsements.