Comment from Clem Chambers, CEO of leading stocks and shares information site, ADVFN.com :
"The FTSE has gone below 5000 for the third time since the crash of the sovereign debt crisis began.
Big round numbers are psychological and this is the mother of psychological financial crisis.
It may bounce back but unless the governments of Europe find a solution fast, the FTSE will find itself heading quickly below 4500, on its way to 4000 and perhaps beyond."