"The test of whether or not there is a reasonable excuse is an objective one. In my judgment it is an objective test in this sense. One must ask oneself: was what the taxpayer did a reasonable thing for a responsible trader conscious of and intending to comply with his obligations regarding tax, but having the experience and other relevant attributes of the taxpayer and placed in the situation that the taxpayer found himself at the relevant time, a reasonable thing to do?"
"The test of reasonable excuse involves the application of an impersonal, and objective, legal standard to a particular set of facts and circumstances. The test is to determine what a reasonable taxpayer in the position of the taxpayer would have done in those circumstances, and by reference to that test to determine whether the conduct of the taxpayer can be regarded as conforming to that standard."
"I find that it is most likely that, if the Commissioners had had regard to paragraph (iii) of the conclusion to Mr Ross' report, their concern for the protection of the revenue would probably have been fortified."
"The court is entitled to investigate the action of the local authority with a view to seeing whether they have taken into account matters which they ought not to take into account, or, conversely, have refused to take into account or neglected to take into account matters which they ought to take into account. Once that question is answered in favour of the local authority, it may be still possible to say that, although the local authority have kept within the four corners of the matters which they ought to consider, they have nevertheless come to a conclusion so unreasonable that no reasonable authority could ever have come to it." (9) As Lady Hale has recently said, in Braganza v BP Shipping[2015] UKSC 17 at [24], this test has two limbs: "