The Tories are in turmoil after the moderate leader of David Cameron's EU conservative grouping resigned yesterday in protest at a lurch to the far-Right within its Polish ranks.
Michal Kaminiski, a Polish MEP, sent a letter of resignation as chairman of the European Conservatives and Reformists (ECR) group after accusing key Tory allies in Poland of driving him out as part of a "far-Right takeover" campaign.
Mr Kaminski has accused Poland's Law and Justice (PIS) party, the ECR's second biggest national section after the Tories, of subjecting him to "aggression" and "hatred" after he formed a moderate breakaway party last year.
"I want this to happen in as calm a way as possible. I underline that I do not want a Polish-Polish war and I think we shouldn't want one in the European Parliament either," he said.
In a move that will deeply embarrass the Prime Minister, he is expected to quit the Eurosceptic grouping to join the pro-EU, mainstream centre-right European People's Party, which Mr Cameron ordered Tory MEPs to leave before creating the ECR in 2009.
The Conservative exit from the EPP provoked controversy and led to the expulsion of a senior Tory MEP who accused the Poles of harbouring racists and anti-Semites.
The Polish split has triggered fierce infighting within the ECR because Mr Kaminski clung on to leadership for three months, with the support of senior Conservatives before he stepped because the row threatened to break up the group.
Conservative MEPs said that Mr Kaminski was expected to seek refuge in the EPP. "He's most likely to join the EPP. It's a bit embarrassing but not as damaging as the backbiting has been," said a senior MEP. "With a new leader as early as next week, we hope this negative chapter will be closed."
The row, and likely departure of Mr Kaminski will put PIS under increased scrutiny after claims that the party, led by Jarolslaw Kaczynski, the brother of the late Polish president killed in an air crash last year, is careering to the far-Right.
Marek Migalski, a Polish MEP aligned with Mr Kaminski, has warned that Mr Cameron's Polish allies in Europe have fallen under the control of the owner of a controversial radio station, infamous for its anti-Semitic and xenophobic outbursts.
Father Tadeusz Rydzyk, the owner of Radio Maryja, has struck a deal with PIS in which his supporters make up 50 per cent of all the party's candidates in Poland's general election, which is due this year, in return for his backing.
Radio Maryja, just one arm of Father Rydzyk's media empire that includes a television station and a national newspaper, has been condemned by the Council of Europe and the Simon Wiesenthal Centre for anti-Semitism.
Glenis Willmott, Labour's leader in the European Parliament, said: "It is deeply disturbing that the Conservative's Polish allies are seen to be moving even further to the extreme with Kaminski's departure."
An ECR spokesman said the resignation letter had not yet been received.
"Our understanding is that Mr Kaminski will propose a solution to the tensions caused by the Polish domestic situation. Until he does so, no decisions on the matter will be taken by the Conservative delegation," he said.
The Telegraph