if you wrote that post it is mean that you didn't understand the qyestion on hand.we don't talking about parties with antisemitic past like the front national of the npd but on parties like the bnp'the pv and ukip.
BNP is totally out of the question - for reasons you have already been told.
I support UKIP as the best party in the UK at the moment, but that doesn't say much. They are libertarian and anti-EU which is enough for me; they are along with the Tories fairly pro-Israel, but UKIP doesn't really care about Zionism, their policy - "UKIP supports the right of Israel to exist as a Jewish state. UKIP rejects calls for Israel to be punished for defending itself from attack." Good so far... oh, but then they go and spoil it all... "Yet UKIP calls on Israel to continue to ensure its military actions remain proportionate and to pursue a political solution to a political problem. " Essentially, we generally support Israel, but we are not that concerned and will criticise her whenever she defends herself in an attempt to pacify screaming anti-Semites because throwing Israel under the bus makes our lives a little easier in the short-term.
I don't see how JTF could ally with any other political party, few parties are that sufficiently interested in Israel. They are Zionist, they support Israel, but their main focus is on their own national issues. They could conceivably work together against Islam, but I am not sure about the presence of JTF in Europe which has the biggest Muslim problem.
Also, I am not sure many parties would want to ally themselves with JTF due to the pressure from the liberal media and opposition parties who would instantly accuse them of allying with Kachists, a banned group, classed as terrorists by the government.