I'm absolutely not surprised at that.
There's an organisation which calls itself "Defend Our Juries" which despite its cleverly chosen name is making an attack on English justice system.
https://defendourjuries.net/
https://en.wikipedia.org/wiki/Defend_Our_Juries
Its proclaimed aim is to encourage jurors not to vote on the evidence but rather to "vote with their consciences" – as they are legally entitled to do.
The name is attractively rousing, stirring feelings of protectiveness and justice; and it has lots of fine things to say about Great British tradition etc.
But if you look, it's nothing to do with cases where, say, a survivor of domestic violence has struck back at their longtime abuser.
Instead it is all about public protests: specifically about Palestine Action. It's not about supporting of the people of Palestine in general, just that particular organisation. Previously Defend Our Juries supported Just Stop Oil.
It has a nice glossy website and is very well organised.
If one were of a cynical turn of mind (moi? Surely not!), one might suspect that Defend Our Juries is not entirely a grassroots movement. Rather, that it has been very successful at picking issues which will recruit sincere people from the grassroots.
So, we need to talk about some extremely popular techniques currently being deployed in politics across the world.
One is "disrupt everything". Breaking down old alliances and social norms creates spaces for disruptivists to swoop in and seize the ground. Disaster Opportunism has been around for a long time and now we also have the Tech Broligarchy. "Move fast and break things."
Another is "use what you've got". We can see this in the US over the last decade, where the Trump administration has been dedicatedly leafing through the statute books to find existing laws to apply in novel ways. They do this in order to carry out actions far outside the norm. The law can be from a different century when the circumstances it is newly applied to didn't even exist when it was written.
A cynic might note that Defend Our Juries looks exactly like someone has leafed through English law, spotted the conscience loophole for juries, and said, "What can we do with that?"
Defend Our Juries was co-founded by an English barrister named Tim Crosland over environmental matters.
https://www.bbc.co.uk/news/uk-57064576
It may well have been founded in some kind of good faith. But I'm pretty sure it's now being used as a vehicle by disruptivists. In fact it would be more surprising if it weren't – they'd have to be asleep on the job not to.
I'm not going to try to identify which actors might have a finger in this pie – it's years since the revelations about Cambridge Analytica or the Internet Research Agency in St Petersburg, and this is now a cheap and effective game anyone can play.
But TL;DR, I was entirely expecting there to be strong attempts to influence the jury.