@sally @meso
Unless you want the country to undergo a full transformation to socialism, I think things like car companies generally should go private. I wouldn't re-privatize trains or water though.

Unions can only go so far, and ideally every company would become a workers co-operative, with an in house elected executive branch (sort of like how the military practically elects its own upper ranks). Ideally the country would transition to a form of market socialism.
That said, we're so far away from that we'll soon probably become an oligarchy and feudal society, whilst nigel farage whips the peasants tolling the fields.

What I suggest though is a sort of new deal as I said, you can read up on the Japanese and German economic miracles. Basically, we should rejoin with the EU and try to get a good trade deal with the US, then use tax money to pump into generally industry for export, as well as infrastructure (Railways, town rebuilding projects, tearing down old houses, etc) meaning we could still have our capitalism and eat it. To do so would require an actual populist leader though, and not a centrist blairite stooge like starmer.