The FTSE 100 made strong progress on Tuesday, buoyed by positive earnings and a drop in the oil price, which helped shrug off worries sparked by a chip sector sell-off in Asia. The FTSE 100 index closed up 89.27 points, 0.8%, at 10,871.02. The FTSE 250 ended up 106.68 points, 0.5%, at 24,004.78, while the AIM All-Share closed down 3.75 points, 0.5%, at 767.94. In London, well-received earnings from Unilever, Croda and GSK spurred gains on the blue-chip FTSE 100, although a "messy" print from lender Barclays saw it lead the fallers. London-based pharmaceuticals maker GSK reported core operating profit of £2.80 billion in the quarter ended June 30 compared with £2.63 billion the year prior.