Cameron: 'Juncker not right person to take organisation forward'
27 June 2014 Last updated at 09:39 BST
David Cameron has said it is important to stick to his principles even if the "odds are stacked against you" in the battle to prevent Jean-Claude Juncker becoming the next European Commission president.
EU leaders are set to confirm their backing for the Luxembourg leader later despite opposition from the UK.
Speaking ahead of the EU summit in Brussels, Mr Cameron said he believed Mr Juncker was not the "right person" for the job.