World oil prices plunged more than five per cent on Monday, reaching the lowest levels since January, on forecasts of a hit to Chinese demand. Brent North Sea crude slumped 5.5pc to $82.84 per barrel and WTI shed 5.7pc to $75.55 as China’s first coronavirus death in six months triggered fears of renewed strict lockdowns in the world’s second biggest economy. “Crude oil prices have slipped ba