25 However, there are other considerations. In the applicant's written submissions dated 25 October 2006, the first day of the hearing, after noting that the 2002 consent had been formally surrendered, the following appears: "In anticipation therefore that it will not be in dispute at the hearing that the consent to the 2002 DA is now no longer of any effect, the relevance of the challenge to that consent is now limited to the extent to which it was relied upon in the consent to the 2003 DA". This is consistent with maintaining reliance on the matters pleaded in paragraphs 116 and 117 of the applicant's pleading. Furthermore, early in his opening oral address on the same day, senior counsel for the applicant said in relation to the 2002 development consent that "it has in fact ceased to be of particular relevance, it having been surrendered some little time ago although its circumstances and the processes which it generated have some residual background significance for the present application". The applicant now relies upon that statement for the submission that it did not abandon its claim relating to the 2002 development consent and that it continued to rely upon council's errors relating to that consent in relation to the making of the 2003 development consent. The applicant draws attention to paragraphs 116 to 117 of its pleading linking the alleged invalidity of the 2003 development consent to the invalidity of the 2002 development consent. The applicant's counsel inform the Court, in their written submissions, that the applicant had intended to rely upon the evidence in respect of the 2002 development consent in its challenge to the 2003 development consent but that due to the council's late concession that the 2003 development consent was invalid, this was not necessary.
26 At the hearing the applicant continued to press other grounds of challenge to the 2003 development consent. When the applicant filed written submissions on 6 March 2007 for the resumed hearing, there was no reference to the allegations in paragraphs 116 and 117 of its pleading. The grounds of invalidity which the applicant pressed, apart from the advertising ground, were not resolved because, as stated earlier, I decided on the fourth day of the hearing that there was insufficient utility in the applicant further agitating additional grounds of invalidity.
27 In my view, it was not unreasonable for the applicant to maintain a claim of invalidity of the 2002 development consent in the context of paragraphs 116 and 117 of its pleading, notwithstanding that otherwise there would have been no utility in doing so after it had been surrendered. What happened to the claim in that context at the hearing is not crystal clear. I have concluded that although it was pressed in the applicant's written submissions of 25 October 2006, it was not pressed at the hearing. Reference to the 2002 development consent at the hearing was consistent with it being treated as only of "residual background significance", as senior counsel for the applicant put it in his opening address. Significantly, the applicant's counsel, in their submissions on this costs application, assure the Court that the applicant had intended to rely upon the evidence concerning the 2002 development consent in its challenge to the 2003 development consent, but that this was unnecessary due to council's late concession that the 2003 development consent was invalid.