"61. This issue involves consideration of whether a party should be allowed to substitute a s.289 appeal where an extension of time is needed to do so. Indeed, there is only really a potential difficulty where an extension of time is needed or where a party seeks to persist with the judicial review claim. Where a judicial review claim was filed within the s.289 period of 28 days and where the party is content to proceed by way of s.289 and to convert to that there is likely to be no difficulty. In those circumstances there would be no prejudice, absent special circumstances, in allowing the judicial review grounds to stand as a s.289 appeal. 62. It was agreed before me that the question of an extension of time is to be considered by reference to the Denton v White test namely considering in the light of the overriding objective the seriousness of the relevant breach; the explanation that is proffered; and then looking at all the circumstances of the case to consider whether justice requires relief to be granted or refused. 63. Bringing a s.289 claim out of time will always be a serious matter even if the period in question is only a short one. That is because of the nature of the proceedings which raise the issue of the continuance in force of an enforcement notice and because of the provisions which emphasise the need for speed and expedition. The strength or otherwise of any particular explanation will depend on the particular circumstances of the case in question. Those circumstances will vary …"