In other news
A prominent Eurosceptic in German Chancellor Angela Merkel's conservative bloc has resigned, due to being pressured to back an extension of Greece's bailout.
US stocks have dropped in opening trade, giving back some of the prior session gains as volatility in equity markets stays elevated.
British pubs and brewery group Marston's says it has agreed to buy the beer division of Thwaites for £25m.
Eurozone consumer prices have fallen again, as expected, but the decline was the smallest this year, indicating the price of goods and services could start rising.
Asian shares have ended slightly higher after China's central bank eased mortgage rules to boost the mainland property market.
A top official of state-run China Southern Power Grid is being investigated for "serious disciplinary violations", as government intensifies graft fight.
Britain's coal imports should soar for the first quarter of 2015 as utilities hoard ahead of a tax rise to entice them away from coal-fired power generation.
Staff at Windsor Castle, one of Queen Elizabeth's residences, are considering withdrawing some services such as guided tours in a dispute over low pay.