When Lehman collapsed money markets froze, businesses went bust, interest rates were slashed and quantitative easing was implemented on a massive scale.
China has set the renminbi-dollar exchange rate at its highest level in five years, after announcing it would make its currency more flexible.
The US Congress is finally close to completing the largest policy reform of the financial sector since the 1930s.
Embattled oil major BP has seen its share price dive below 300p, hitting a 14-year low, as the escalating cost of the Gulf of Mexico oil spill hit $2.3bn (£1.57bn).