An expert witness is a person whose opinion, by education, training, certification, skills or experience, is accepted by the judge as an expert. In this case, the expert was a vet.
'Expertise' (your quotes) is not "being questioned"; being the expert witness exposed to the evidence in this trial is. As far as I 'm aware no GN poster acted as such a witness. Therefore, they don't know the evidence presented to the jury, which may or may not have included the piece of film - their only evidence.
You are ready to stick to facts when facts are in favour of your argument Maisie, but very thin-skinned when they are not. Your loaded comment, "What level of abuse are you willing to find acceptable?" is an underhand attack. I am never prepared to accept abuse.
Thanking the jury for their service, Recorder Graham Huston said: 'Ladies and gentlemen, thank you very much. I know it was not an easy case, no case is easy, but some cases are more difficult than others.
'What is obvious is you gave this case the utmost attention and you proceeded with your deliberations carefully and thoroughly and I am very grateful to you.'