[underslung]

Ok. So what would constitute as hard/far left?

Under your definitions' it seems like being a nationalist (believing in the nation-state and sovereignty) & white supremacy are synonymous — which obviously they are not, unless you are suggesting all nationalists are racist or something.

[Symbiote]

The people left of the Green party, or left of Corbyn.

The communist party, Socialist Labour Party (borderline), Respect. The people advocating a ban on eating meat, private cars etc.