Oil prices hit a record high above $135 a barrel on Thursday, having rocketed by more than $4 a barrel on Wednesday.US light, sweet crude for July delivery reached $135.09, taking its gain for the year so far above 40%.
The main driver was the US crude stocks figure, which showed an unexpected fall of 5.4 million barrels.
UK Prime Minister Gordon Brown is working with international partners to persuade the Opec oil producers' cartel to increase supply.
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