European Parliament: Anti-EU political parties on rise
25 October 2013 Last updated at 14:40 BST
The 2014 European elections look set to see more anti-EU MEPs elected to the parliament in Brussels, bringing more allies to UKIP as it speaks of beating all three of Britain's longer-established parties.
It is not clear how well the eurosceptics will get along - UKIP has said it will not work with the far right parties from France and the Netherlands - and not all of them want their country to leave the EU.
Pro-European parties fear the eurosceptics may try to clog up the institution. Giles Dilnot reports from Strasbourg.