I don't understand why you think its the far left.
Starmer has purged the party of virtually the whole left and its the centrists that remain, Socialism is a word that is not spoken anymore, so why does the Labour party even exist. I do not trust him, he used big business to fund his leadership campaign and writes in the RW media, that indicates to me he is going to take the party rightwards and embrace the principles of Blairism, which is pro-free market, anti Trade Union, economically neo-liberal and socially liberal.
How the party is still one party at all surprises me, because if i was a Labour MP i would have done the honourable thing and resigned the party whip and stood in Parliament as an Independent Socialist.