Oil prices rose in early trade on Wednesday, adding to gains in the previous session, after industry data showed a surprise drop in U.S. crude stocks last week, a positive sign for demand, and attention shifted away from hostilities in the Middle East.U.S. crude inventories fell 3.237 million barrels in the week ended April 19, according to market sources citing American Petroleum Institute figures. In contrast, six analysts polled by Reuters had expected a rise of 800,000 barrels.Meanwhile, expectations are growing that interest rates will be cut in the UK and EU in June, which could help support economic growth and, in turn, oil demand.In the U.S., business activity cooled in April to a four-month low, with S&P Global saying on Tuesday that its flash Composite PMI Output Index, which tracks the manufacturing and services sectors, fell to 50.9 this month from 52.1 in March.Traders have largely ignored the latest developments in the Middle East in early trade on Wednesday where, according to residents, Israeli strikes intensified across Gaza in some of the heaviest shelling in weeks.