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Andy Murray may support "anyone but England" in the football but new research reveals his roots lie south of the border.

As the Scots tennis ace powered into the Wimbledon semi-final, genealogy experts traced his roots to England.

Website TheGenealogist.co.uk has discovered Andy's maternal grandmother was born to English parents from York and Berwick-upon-Tweed.

One Englishman already supporting Murray was Sir Michael Caine, who watched his centre court victory with Ben Stiller and his wife Christine.

Murray, 23, screamed with delight after finishing off Frenchman Jo-Wilfried Tsonga in a four-set match.

And he said last night winning his first Grand Slam at Wimbledon would be "extra special". But he warned: "I'm a long, long way from doing that.

"Six sets away, and I have to beat the No 1 in the world if I even want to have a chance of doing that."

He admitted he will have to be at his very best to beat Spaniard Rafael Nadal in tomorrow's semi-final.

Murray added: "He's playing great.

Psychologically, I need to believe that I can win the match.

"That's the important thing."

Bookies made him the shortest price Brit to win Wimbledon since Fred Perry in 1936. William Hill had him at 11/5, second favourite behind Nadal who is the 5/4.

Ticket agencies reported a surge in interest in the men's singles final following Murray's emphatic win.

Centre Court final tickets are selling for £6,000 but prices are expected to rise to up to £25,000.

Thousands more fans will watch on Henman Hill, fast becoming known as Murray Mount.