“[40] In Denton, the Court of Appeal was considering the application of the later version ofCPR Rule 3.9 above to three separate cases in which relief from sanctions was being sought in connection with failures to comply with various rules of court. The Court took the opportunity to “restate” the principles applicable to such applications as follows (at [24]): “A judge should address an application for relief from sanctions in three stages. The first stage is to identify and assess the seriousness and significance of the 'failure to comply with any rule, practice direction or court order' ... If the breach is neither serious nor significant, the court is unlikely to need to spend much time on the second and third stages. The second stage is to consider why the default occurred. The third stage is to evaluate 'all the circumstances of the case, so as to enable [the court] to deal justly with the application including [factors (a) and (b) in Rule 3.9(1)]” [41] In respect of the “third stage” identified above, the Court said (at [32]) that the two factors identified at (a) and (b) in Rule 3.9(1) “are of particular importance and should be given particular weight at the third stage when all the circumstances of the case are considered. “A judge should address an application for relief from sanctions in three stages. The first stage is to identify and assess the seriousness and significance of the 'failure to comply with any rule, practice direction or court order' ... If the breach is neither serious nor significant, the court is unlikely to need to spend much time on the second and third stages. The second stage is to consider why the default occurred. The third stage is to evaluate 'all the circumstances of the case, so as to enable [the court] to deal justly with the application including [factors (a) and (b) in Rule 3.9(1)]”