Oil prices fell on Thursday, extending sharp losses from the previous session, as China’s extension of lockdown measures to curb the Covid-19 spread exacerbated concerns that a slowdown in economic activity globally would hit fuel demand. Brent crude futures lost 40 cents, or 0.4 per cent, to $87.60 per barrel by 1002 GMT, near a late-January low. US crude futures were down 41 cents, or 0.5pc,