“I have to ask the question whether, taking all the circumstances, and having regard to public policy and the desirability of limiting litigation and avoiding costs, the issue now before me has been effectively covered by the criminal proceedings. Mr Mathew suggested that the Appellant might have been a mere agent (guilty of conspiracy to defraud but not himself the principal tax payer); or that he might be in partnership with others. I intend no disrespect to the forceful argument that he put forward in concluding that it would be an abuse of the process of this tribunal to allow the Appellant to pursue the grounds of appeal now in dispute.”
“51. … traders who take every precaution which could reasonably be required of them to ensure that their transactions are not connected with fraud, be it the fraudulent evasion of VAT or other fraud, must be able to rely on the legality of those transactions without the risk of losing their right to deduct the input VAT …
“[59] The test in Kittel is simple and should not be over-refined. It embraces not only those who know of the connection but those who 'should have known'. Thus it includes those who should have known from the circumstances which surround their transactions that they were connected to fraudulent evasion. If a trader should have known that the only reasonable explanation for the transaction in which he was involved was that it was connected with fraud and if it turns out that the transaction was connected with fraudulent evasion of VAT then he should have known of that fact. He may properly be regarded as a participant for the reasons explained in Kittel .
“The doctrine of estoppel per rem judicatam is reflected in two Latin maxims, (i) interest rei publicae ut sit finis litium and (ii) nemo debet bis vexare pro una et eadem causa . The former is public policy and the latter is private justice. The rule of estoppel by res judicata, which is a rule of evidence, is that where a final decision has been pronounced by a judicial tribunal of competent jurisdiction over the parties to and the subject-matter of the litigation, any party or privy to such litigation as against any other party or privy is estopped in any subsequent litigation from disputing or questioning such decision on the merits. As originally categorised, res judicata was known as “estoppel by record”. But as it is now quite immaterial whether the judicial decision is pronounced by a tribunal which is required to keep a written record of its decisions, this nomenclature has disappeared and it may be convenient to describe res judicata in its true and original form as “cause of action estoppel”. This has long been recognised as operating as a complete bar if the necessary conditions are present. Within recent years the principle has developed so as to extend to what is now described as “issue estoppel”, that is to say where in a judicial decision between the same parties some issue which was in controversy between the parties and was incidental to the main decision has been decided, then that may create an estoppel per rem judicatam.”
“Res judicata is a special form of estoppel. It gives effect to the policy of the law that the parties to a judicial decision should not afterwards be allowed to relitigate the same question, even though the decision may be wrong. If it is wrong, it must be challenged by way of appeal or not at all. As between themselves, the parties are bound by the decision, and may neither relitigate the same cause of action nor reopen any issue which was an essential part of the decision. These two types of res judicata are nowadays distinguished by calling them “cause of action estoppel” and “issue estoppel” respectively.”
“If a taxpayer has the means at his disposal of knowing that by his purchase he is participating in a transaction connected with fraudulent evasion of VAT he loses his right to deduct, not as a penalty for negligence, but because the objective criteria for the scope of that right are not met. It profits nothing to contend that, in domestic law, complicity in fraud denotes a more culpable state of mind than carelessness, in the light of the principle in Kittel . A trader who fails to deploy means of knowledge available to him does not satisfy the objective criteria which must be met before his right to deduct arises.”
“ Greener Solutions Ltd … also concerned a “missing trader” fraud. In that case Greener Solutions (“GSL”) sought repayment of the input tax incurred in respect of mobile telephones it had bought and then exported. The individual who had effected all the relevant transactions on behalf of GSL was Oliver Murray. Murray knew of the fraud committed by Jag-Tec, the missing trader. The question was whether his knowledge should be imputed to GSL. Warren J concluded at para 43 that it should be because Murray had effectively implemented the fraud on behalf of GSL but the fraud was not aimed at GSL.”
“The context in which attribution is relevant is the application of Kittel where knowledge is critical to the VAT result. For this reason one would in principle attribute the knowledge of someone, whether an employee or not, dealing with a transaction in which Kittel is relevant, to the company engaged in the transaction. If such knowledge were not attributed to the company the directors could close their eyes to the fraud by leaving the transactions to employees.”
“[11] … we are only concerned with the question of what Mr Leitch knew or should have known.
“The Tribunal may strike out the whole or a part of the proceedings if … the Tribunal considers there is no reasonable prospect of the appellant's case, or part of it, succeeding.”