"...In my view in the context of the civil penalty regime at least the test for dishonesty is that identified by Lord Nicholls in [Royal Brunei Airlines Sdn Bhd v Tan,[1995] 2 AC 378 ] as reconsidered in [Barlow Clowes International Ltd v Eurotrust International Ltd,[2005] UKPC 37 ]. The knowledge of the person alleged to be dishonest that has to be established if such an allegation is to be proved is knowledge of the transaction sufficient to render his participation dishonest according to normally acceptable standards of honest conduct. In essence the test is objective - it does not require the person who is alleged to have been dishonest to have known what normally accepted standards of honest conduct were."
“In my opinion Lord Nicholls [in Tan] was adopting an objective standard of dishonesty by which the defendant is expected to attain the standard which would be observed by an honest person placed in similar circumstances. Account must be taken of subjective considerations such as the defendant's experience and intelligence and his actual state of knowledge at the relevant time. But it is not necessary that he should actually have appreciated that he was acting dishonestly; it is sufficient that he was.”
“Take for example a man who comes from a country where public transport is free. On his first day here he travels on a bus. He gets off without paying. He never had any intention of paying. His mind is clearly honest; but his conduct, judged objectively by what he has done, is dishonest. It seems to us that in using the word ‘dishonestly’ in theTheft Act 1968 , Parliament cannot have intended to catch dishonest conduct in that sense, that is to say conduct to which no moral obloquy could possibly attach.”
“In reaching a judgment as to alleged dishonesty in civil penalty cases the tribunal must have regard to the fact that while the test is primarily objective, the tribunal's fact-finding responsibilities in relation to the taxpayer's knowledge are critical. For example, by normally accepted standards proceeding through the green channel while in possession of goods on which duty is clearly due might well be indicative of dishonesty by those objective standards. But what if the person did not understand the difference between the green and red channels, and could not read the relevant customs warnings at the airport?”