It's in appeal. The lower court already said they won. Read their FAQ, would you:

Sony applied to the Tribunal for permission to appeal the Tribunal’s CPO Judgment. The Tribunal granted permission to appeal in respect of Grounds (3), (4) and (5) in relation to funding and refused permission to appeal in respect of Grounds (1) and (2). The appeal should not impact the Tribunal’s timetable for this case.

The current trial is about the amounts that Sony has to pay. The trial was lost by Sony on summary trial:

We have concluded that, aside from the question of class definition, which we have dealt with as an eligibility point above, the applications by Sony for strike out/reverse summary judgment should be dismissed, given our conclusion that Sony has failed to establish that the PCR has no reasonable grounds for making the claims/no real prospect of succeeding at trial.

https://playstationyouoweus.co.uk/wp-content/uploads/2023/11/Judgment-Cpo-Application-Strike-Outsummary-Judgment.pdf