DECISION
17 The relevant questions were whether the investigation into the alleged offence was conducted in an unreasonable manner, or whether the prosecutor unreasonably failed to investigate (or investigate properly) any relevant matter. No question was raised as to whether the proceedings were conducted by the prosecutor in an improper manner, under par.(b) of s.70(1).
18 In my opinion, the submissions based on the failure to call Mr. Harrop at the hearing are therefore misconceived. That failure relates to the manner in which the proceedings were conducted, not to the investigation. In any event, the finding of Talbot J did not amount to a finding that the proceedings were conducted in an improper manner.
19 However, in my opinion there is force in the submission that, in investigating the matter, Council officers should have asked Mr. Harrop what he observed between the nominated dates in relation to the crushing of cars and the presence on site of the employees of the appellant, particularly after the appellant had asserted to the Council that Mr. Irvine was not at the site, and that no other person authorised by the appellant was at the site, at relevant times. Whether or not it would have been reasonable to rely on a circumstantial case before that assertion was made, it is certainly arguable that it was no longer reasonable after the assertion was made, in circumstances where there was a witness who may have been able to give direct evidence of what occurred.
20 As regards s.70(1)(c), it could be said that a person seeking costs must identify a matter that the prosecution was or ought to have been aware of and that suggested that the appellant might not be guilty or that the proceedings should not have been brought. If the "matter" in question here is that there was a possible eye-witness, then it was not shown that this matter suggested that the appellant might not be guilty. If the "matter" in question is the evidence that that witness could give, although it could be said that the Council should have been aware of it, it was not shown that this evidence suggested that the appellant might not be guilty. Accordingly, in relation to s.70(1)(c), I do not think error by the primary judge was shown.
21 However, in relation to s.70(1)(a), I do not think it is necessary for the person seeking costs in every case to show that an investigation conducted in a reasonable manner would have suggested that the appellant might not be guilty or that the proceedings ought not to be brought. If a prosecutor knows there are five eye-witnesses to an event, and interviews and calls only one of them, and the prosecution then fails, I think s.70(1)(a) may apply even if the person seeking costs does not prove what the other four witnesses would have said. Similarly, closer to this case, if the prosecutor knows there is an eye-witness to what happened, but does not interview this witness, and instead relies wholly on a circumstantial case, in my opinion s.70(1)(a) may be satisfied even if the person seeking costs does not prove what the eye-witness would have said.
22 The only relevant reason given by the primary judge for not finding s.70(1) satisfied in relation to Mr. Harrop was that he could not determine what the outcome would have been if Mr. Harrop had been called. In my opinion, this could not be a sufficient reason for determining that s.70(1)(a) does not apply. The primary judge did not give reasons that could justify such a determination, and in my opinion this amounts to an error of law.
23 In my opinion, there was no independent error of law in relation to alibi. The mere assertion on behalf of the appellant that no-one with the authority of the company was on the site on 31 July 2004, and that it could be proved that Mr. Irvine was elsewhere, did not as a matter of law necessarily require a conclusion that it was unreasonable for the Council not to investigate Mr. Irvine's possible alibi or to enquire whether or not there were alibis for all other employees. Any requirement for the prosecution to disprove alibis beyond reasonable doubt only arises if there is evidence capable of raising a reasonable doubt as to whether an accused was elsewhere at the time of the offence; and mere assertion by an accused person that there is an alibi is insufficient for this. If there was error by Talbot J on this aspect, it was an error of fact.
24 Accordingly, it will be necessary for Talbot J to reconsider the question under s.70(1)(a) in the light of these reasons: that is, it will be necessary for him to consider whether, having regard to the matters referred to in par.[19] of this judgment, the investigation into the alleged offence was conducted in an unreasonable manner.
25 At present, I see no reason why the costs of this appeal should not follow the event, and I would so order. If the Council wishes to submit to the contrary, it should do so by written submissions within 7 days, with any response to be provided within a further 7 days. Otherwise the order made today would stand.