If you take London Tribunals to judicial review, I suppose you are aware of the potential costs ?
From what I can see, you delayed payment to park by 2.5 hours to check which amount you should pay from two quite trivial sums, and in that period received a PCN which you regarded as unjustified and took it all the way to London Tribunals where you lost. I can't see any win at judicial review at all, sorry.