Lord Browne's 58 per cent increase is largely due to an annual performance bonus, which nearly doubled to £1.8million, according to the company's annual report and accounts, published today. The £1.5 million windfall should ease the pain of a loss on the BP shares he holds; a falling stock market shaved about 15 per cent, or £650,000 off their value last year, making them worth £2.6 million.