ronib
Growstuff I imagine that a sufficient number of ‘sound’ ‘approved’ speakers will come forward.
I have just seen footage of Just Stop Oil spraying orange powder all over a garden at Chelsea Flower Show . I suppose vetting speakers is a sign of the times?
When you say "sound", I assume you mean government sycophants.
What on earth do you imagine this man was going to say which would have contradicted anything the government wants in the context of chemical weapons?
Do you imagine this man is some kind of Putin agent who was going to deny the existence of Novichok?
The UK hasn't use chemical weapons in warfare since WW1. It stopped experimenting with them in the 1980s. They're on the same side.
I have no idea how influential he is in his field, but he was asked by the organisers to make a presentation and they even waived the fee which presenters at this kind of conference usually pay. He's written a book. Presumably it was thought he had something important to say.
He was uninvited as a result of some anti-government tweets. AFAIK those tweets had nothing to do with the government's chemical weapons policy. He wasn't banned because it was thought he was going to say anything controversial or "political" but because he isn't one of an arse-licking clique.