Setting aside Corbyn, the politician, whose appeal i never understood, yourparty makes explicit the essential problem of British political economy. The public has rejected markets (left and right) There are many on mumsnet who have too. Certainly public unhappiness with the economy is understandable, but there's only one alternative to markets and that's central planning. Labour of old realized this, that's why you had Tony Benn laying out plans to nationalise the financial sector, and create boards to allocate raw materials, man power and investment to tightly regulated and partially or completely nationalised industrial sectors and create dynamic instruments to regulate pricing.
Anything less than that means that you revert to market based economics where regulation serves as a drag and disincentive to economic activity.
But in the present day, everyone on the left is happy to disparage markets, and yet has no appetite for the gigantic economic reorganisation that would be necessary to accomplish their abolition (or serious retrenchment) - energy, water, rail, and mail services constitute a tiny portion of the UK economy, and even less of UK employment. Taking those on will raise the cost of UK outlays to keep services running, but won't give them any measure of control over directing the economy, i.e. de-prioritising markets.
In general it's an dangerous gambit because it presents solutions that lack inner coherence, i.e. that can't possibly the correct course of action and that therefor breed cynicism.
I'm curious if other believe there's an inner logic that I'm missing. That there is an actual proposal on the left to usher in a post-market, post neoliberal order that at least has a minimum of coherence. Or if not coherence, is actually post-market.