I think you're all forgetting Trumps ace card, the BBC's admission of guilt.
The BBC has admitted that that their editing of a nearly two hour speech into a 20 second clip might have given the wrong impression. The Panorama episode was only 60 minutes long. How could they truncate the 2 hour speech in a 60 minute programme?
You seem to be overlooking the fact that he claims that he lost votes and money because of the programme. The programme was not available in the USA and any overseas Americans would have submitted their votes before the programme was watched by 70,000(?) people in the UK.
Trump knew nothing about the programme until someone like Natalie (looks like my plastic daugher) Harp told him about the Telegraph article nearly two years later.
At great expense, the BBC has submitted 35,000 pages. The P'do's lawyers pushed back against requests for financial records. Trump's legal team complained that doing so would require them to submit 10,000 pages.
Rather than having to hand the info over, his legal team have dropped the financial harm claim. The judge seems to be pushing back though- why bring a case and then drop £5bn of it.
Whilst it may upset you, Trump has lodged many defamation cases. Most of the time he backs out once it reaches discovery. He has never once won a defamation case. His "I never wrote a picture" in the p'do Epstein (WSJ) birthday card case is pretty close to being tossed.