“ 34. Applications for extensions of time limits of various kinds are commonplace and the approach to be adopted is well established. As a general rule, when a court or tribunal is asked to extend a relevant time limit, the court or tribunal asks itself the following questions: (1) what is the purpose of the time limit? (2) how long was the delay? (3) is there a good explanation for the delay? (4) what will be the consequences for the parties of an extension of time? and (5) what will be the consequences for the parties of a refusal to extend time. The court or tribunal then makes its decision in the light of the answers to those questions. … 37. In my judgment, the approach of considering the overriding objective and all the circumstances of the case, including the matters listed inCPR r 3.9 , is the correct approach to adopt in relation to an application to extend time pursuant to section 83G(6) of VATA. The general comments in the above cases will also be found helpful in many other cases. Some of the above cases stress the importance of finality in litigation. Those remarks are of particular relevance where the application concerns an intended appeal against a judicial decision. The particular comments about finality in litigation are not directly applicable where the application concerns an intended appeal against a determination by HMRC, where there has been no judicial decision as to the position. Nonetheless, those comments stress the desirability of not re-opening matters after a lengthy interval where one or both parties were entitled to assume that matters had been finally fixed and settled and that point applies to an appeal against a determination by HMRC as it does to appeals against a judicial decision. ”