UK FTSE 100 traded down on Monday led by pharmacy company Shire Plc. Investors remained cautious awaiting for the outcome of the upcoming EU summit in Brussels due this week. Shire plunged 13% after its rival's hyperactivity drug Adderall XR was approved by U.S. Food and Drug Administration. Retailer Wm Morrison Supermarkets lost 1.7% on news its Finance Director R. Pennycook plans to quit after one year. At the moment of writing FTSE 100 is 0.8% or 41 point lower at 5,472.