Which Party is the party of Anti Elites?

Well there isn't any ALL parties in England are Pro Zionist and Pro Israel and All parties are trying to silence Pro Palestinian activists.

Why is it in Ireland and Scotland you have parties that are openly in support of Palestine without any trouble but in England you are classed as Anti Semitic and silenced by the party you are a member off?

Well that comes down to the Balfour Declaration.

What is the Balfour Declaration?

The Balfour Declaration was a public statement issued by the British government during World War I announcing support for the establishment of a "national home for the Jewish people" in Palestine, then an Ottomanregion with a minority Jewish population. It read:

Wikipedia Explains

The declaration was contained in a letter dated 2 November 1917 from the United Kingdom's Foreign Secretary Arthur Balfour to Lord Rothschild, a leader of the British Jewish community, for transmission to the Zionist Federation of Great Britain and Ireland. The text of the declaration was published in the press on 9 November 1917.

Immediately following their declaration of war on the Ottoman Empire in November 1914, the British War Cabinet began to consider the future of Palestine. By late 1917, in the lead up to the Balfour Declaration, the wider war had reached a stalemate, with two of Britain's Allies and Associated Powers not fully engaged: the United States had yet to suffer a casualty, and the Russians were distracted by internal upheaval. A stalemate in southern Palestine was broken by the Battle of Beersheba on 31 October 1917.

The first high level negotiation between the British and the Zionists can be dated to a conference on 7 February 1917 that included Sir Mark Sykes and the Zionist leadership. Subsequent discussions led to Balfour's request, on 19 June, that Rothschild and Chaim Weizmann submit a draft of a public declaration. Further drafts were discussed by the British Cabinet during September and October, with input from Zionist and anti-Zionist Jews but with no representation from the local population in Palestine. The release of the final declaration was authorised by 31 October; the preceding Cabinet discussion had referenced perceived propaganda benefits amongst the worldwide Jewish community for the Allied war effort.

Ever since the Brits stole Palestinian Land under the Balfour declaration hundreds of thousands of Palestinians have been murdered as part of an Israeli Genocide which ALL parties supported and still do.