BNP leader Nick Griffin has announced a new political alliance to fight “this monstrous federal Europe”.
Right-wing parties across the EU are linking up to generate funding and increase their political clout.
Mr Griffin, one of two BNP members who won seats in the euro-elections last June, said the initiative showed right-wing nationalist parties could work together to achieve their own aims.
At a launch in Brussels for the far-right European Alliance of National Movements, he declared: “You can be a nationalist without being confrontational.”
Key figures in the new grouping are fellow MEPs Bruno Gollnisch, vice-president of the French National Front and Front National for International affairs.
The group cannot muster enough support yet to be recognised as a formal political grouping in the European Parliament.
But they will get funding as a pan-European grouping, sharing in a pot of money Mr Griffin put at €11m — nearly £10m.