I do not understand how a judicial system can be so in the pockets of politicians.
In the UK most people could not name a single supreme court judge. And would not know what their political preferences might be.
What is more important, is that politicians would not know that either. Judges do not make political decisions.
It is not really in the "pockets of politicians."
There is undoubtedly judicial corruption that needs to be addressed, but this doesn't mean the system is broken, unnecessary, or toxic.
While i congratulate the UK in finally creating a supreme court and their movement away from a system of parliamentary sovereignty, i do not think the people of the UK are alone in their lack of ability to name Supreme Court Justices. While they are definitely more prominent with the recent Kavanaugh confirmation process, the refusal to hear the appointment of hon. Garland and the subsequent appointment of hon. Gorsuch. Supreme court justices are not really fighting for the political spotlight.
Still, I do think one should read their opinions. Knowing there names may be a consequence of that.