“... where it is ascertained, having regard to objective factors, that the supply is to a taxable person who knew or should have known that, by his purchase, he was participating in a transaction connected with fraudulent evasion of VAT, it is for the national court to refuse that 10 taxable person entitlement to the right to deduct.”
“It is clear from this passage that the scope of constructive knowledge 45 is not limited to what the taxpayer could have found out about the particular fraud by making further enquiries; it is wider than that and 10 encompasses the inferences that the taxpayer should have drawn from all the information at his disposal at the relevant time.”