In his first Parliament speech in seven years Boris Johnson set himself as potential leader of the Tories' "No" campaign.
As the Conservatives lag at the polls, the UK prime minister warns of economic doom if Labour wins.
British prime minister has announced his intention to renegotiate membership terms if he is re-elected.
Downing Street says Britain still wants a diplomatic solution to the standoff with Ecuador over the proposed extradition to Sweden of Julian Assange.
An Anglo-American attempt to hand over the Libyan operation to Nato was rejected by several key member countries.
Britain made "little progress" in reaching out to Muslim communities despite investing "considerable time and resources" after the 7/7 London bombing.
In a setback for Brown, who had hoped the inquiry would be held in private, Sir John Chilcot ruled that all witnesses will be expected to give evidence in public.
British Prime Minister Gordon Brown on Thursday night set the seal on a new phase in Britain's special relationship with the United States when he won ringing endorsements from the present and future generations of American leaders. US President George Bush hailed Brown as a "good friend".
British Prime Minister Gordon Brown on Tuesday embraced one of Tony Blair's most controversial legacies when he cast himself as the leader best placed to bring Europe and the United States together after the bitter divisions over Iraq. As he prepared to fly to the US, Brown lavished praise on US leaders across the spectrum.
Europe's "Christian values" should be enshrined in a new version of the European Union Constitution, German Chancellor Angela Merkel declared last week after meeting the pope. In remarks that will reopen the debate on religion in the EU, Merkel threw her weight behind Pope Benedict's campaign to recognise Europe's Christian heritage.