London shares took a tumble today as banks and insurers fell back on renewed fears about the health of the global economy.

The FTSE 100 Index dived 116.30 points to 3790.90 in early trading but by 10am, it had recovered slightly to 3800.100, showing a fall of 107.10 since trading started.

The dour start followed heavy losses on Friday in the United States when a series of profit warnings pushed the Dow Jones Industrial Average down 295 points.

Martin Dobson, head dealer at NatWest Stockbrokers, said: "Wall Street is yet again having an effect on our market."