By Devik Jain (Reuters) -Commodity stocks and banks led a near 2% drop in London’s FTSE 100 on Monday as fears of a global economic slowdown sapped sentiment at the start of a week loaded with corporate earnings. After falling as much as 2.4%, the blue-chip index pared some losses to close down 1.9% at its lowest in more than five weeks. The domestically focused mid-cap FTSE 250 index ended down 1.4% after hitting its lowest level since March 16. Oil majors BP and Shell lost 6.2% and 5.2%, respectively, and the industrial mining sub-index sank 5.6% on worries that prolonged COVID-19 lockdowns …