"( a ) The validity of an enforcement notice shall not, except "by way of an appeal under Part V of this Act, be "questioned in any proceedings whatsoever on any of the "grounds on which such an appeal may be brought;"
". . . . it would in my view as a general rule be contrary "to public policy, and as such an abuse of the process of "the court, to permit a person seeking to establish that a "decision of a public authority infringed rights to which he "was entitled to protection under public law to proceed "by "way of an ordinary action and by this means to evade the "provisions of Order 53 for the protection of such "authorities."
"even peripheral to a public law claim. They are the "essence of the entire claim (so far as negligence is "concerned)."
"the decision of the "public authority which the litigant wishes to overturn". (Emphasis added).In the present case, on the other hand, the respondent does not impugn or wish to overturn the enforcement order. His whole case on negligence depends on the fact that he has lost his chance to impugn it. In my opinion therefore the general rule stated in O'Reilly supra is inapplicable. The circumstances in which the procedure under Order 53 is appropriate were described in some detail by Lord Diplock in O'Reilly. At page 1100 G he mentioned the fact that in that case no claim for damages would lie against the defendants, and that the only relief sought was for a declaration, a form of relief that is discretionary only. At page 1106 D he explained that one of the reasons why the procedure under Order 53 is appropriate in certain cases is that it provides "a very speedy means, available in urgent cases within a matter "of days rather than months, for determining whether a disputed "decision was valid in law or not."
"The public interest in good administration requires that "public authorities and third parties should not be kept in "suspense as to the legal validity of a decision the authority "has reached in purported exercise of decision-making "powers for any longer period than is absolutely necessary in "fairness to the person affected by the decision."
"(a) The validity of an enforcement notice shall not, except "by way of an appeal under Part V of this Act, be "questioned in any proceedings whatsoever on any of the "grounds on which such an appeal may be brought;"