ECB chief's euro pledge cheers FTSE

Ady Kerry/PA Wire/Press Association Images

World markets have rallied after the boss of the European Central Bank pledged to do "whatever it takes" to keep the euro together.

Hopes of a solution to eurozone debt woes were raised after ECB president Mario Draghi made the resolute comments at a conference in London, suggesting he may restart buying government bonds to ease the pressure on Spain's borrowing costs.