They can simply appeal the judge's ruling that it was industrial design, from that point lots can happen... Or they can continue with further hearing that the judge was clear needed to happen...
A lot was left out of this case, Trademark for one thing, as well as other items, focus was very limited in the UK trial as clearly outlined by the judge...
This isn't exactly a closed and shut case... This can very well also be continued or even started new under EU reciprocatory treaties and conventions over and above the UK courts...
If LFL wants to continue to press the issue they have lots and lots of channels available to them...
A simple appeal is not the only option open but it will probably be the start if they continue to press the issue...
That leaves A LOT to be ruled upon at a further date, including but not limited to his rights to sell said objects in the UK and the rest of the world that do honor and recognize US copyright ownership to whatever degree...
It also left damages and other reliefs wide open for ruling...
The UK case focused pretty much solely on UK ownership of the copyright, and enforcement of said ownership, if determined, in the UK...
There were and are still many issued and sorts that were not fully sorted out...