UK stocks declined on lingering concerns over the Eurozone's economy. The German Constitutional Court delayed its decision regarding planned changes in bailout rules on Tuesday. Financial stocks extended losses, with Lloyds Banking, Barclays and HSBC tumbling by 1.68%, 1.20% and 0.34%, respectively. Commodity producers also declined. Rio Tinto and BHP Billiton retreating 1.25% and 1.14%. Meanwhile, Glencore International soared 1.53% after the company announced it agreed to acquire Vale's European manganese ferroalloys operations for USD160 million in cash. Burberry Group sank 7.32% as the firm reported a slowdown in its sales growth.