"The £30 million increase in investment returns over 2007 represents a return of 7.5% on average invested funds and was the result of a strategic reduction of exposures to financial institutions and corp rate credits in September 2007."
Sure, they gained 7.5% in investments in pound denominations. The pound lost 40% to the dollar. If they have to pay many claims in US funds, their reserves are in serious jeopardy.