Dave,
"Not everyone who has the known facts is convinced so there is an element of doubt."

Yes. They just say highly probable and no plausible alternative.
Absolute proof is rarely possible and not required for a conviction.
Just "beyond reasonable doubt."
That is clearly the situation here because guilt is assumed by all those who have the evidence.

Why do you dismiss the assessment of every EU government and your own party?
What have you got that they are all missing?