More than 50 oil tankers are anchored off Britain - pieces in a game in which the only winners are market speculators. The losers are the millions of British motorists paying over the odds for their petrol and diesel.
Some are carrying aircraft fuel or fuel for homes. Others are empty, waiting to be restocked before setting off around the globe. But according to industry experts, a significant number are 'oil sharks' - tankers that have been cynically told to wait for crude prices to be driven up before they unload their cargo.
