By Jonathan Davies
The FTSE 100 fell further in early trading on Thursday, extending the seven-year low hit on Wednesday.
The stock index closed at 6,403.45 on Wednesday, but fell a further 34.38 points when trading started this morning.
Earlier this year, the FTSE 100 hit record highs of more than 7,022 points.
But growing economic uncertainty has hit financial markets around the world. The Greek bailout crisis, growing speculation over interest rates and trouble in Chinese stocks have all affected shares.