Europe's economic and financial affairs commissioner Olli Rehn has warned Portugal may need a fresh bailout within a year.
Robin Geffen and Neil Woodford are among shareholders in International Power calling for French utility firm GDF Suez to hike its bid for the group.
Euro finance ministers are considering increasing the size of the eurozone's rescue funds which were set up to bail out indebted nations.
Ireland fell back into recession in the last quarter of 2011, according to official figures released on Thursday.
The UK's prized AAA credit rating has been put on "negative outlook" by Fitch, the second ratings agency to warn of a possible economic downgrade.
Jamie Broderick, head of J.P. Morgan Asset Management's EMEA business, is set to leave at the end of this year, after almost 20 years at the company.