Former champion Damon Hill says the formula one title battle between Jenson Button and Lewis Hamilton could boil over in Monday's British Grand Prix.
Britain's two world champions are one-two in the standings for leaders McLaren after winning two races each this season.
Hamilton, the 2008 champion, leads current title holder Button by six points at the halfway point.
Hill says Button wont want to give Lewis any advantage and is predicting a fiery battle at the new Silverstone circuit.
Five drivers have led the standings after nine of the 19 races, with the battle for the title still wide open and everything to race for.
