‘A judge should address an application for relief from sanctions underCPR r 3.9 (1) in three stages: (i) identify and assess the seriousness and significance of the failure to comply with any rule, practice direction or court order which engages rule 3.9(1) ; (ii) consider why the default occurred; (iii) evaluate all the circumstances of the case, so as to enable the court to deal justly with the application including the factors in sub-paragraphs (a) and (b) . The focus of the inquiry at the first stage should be not on whether the breach has been trivial but on whether it has been serious or significant. The assessment of seriousness or significance should not, initially at least, involve a consideration of other unrelated failures which may have occurred in the past. If a judge concludes that a breach is not serious or significant, relief from sanctions will usually be granted and it will usually be unnecessary to spend much time on the second or third stages. If the court decides that the breach is serious or significant, the second and third stages assume greater importance. Although the second stage cannot be derived from the express wording of the rule, it is important particularly where the breach is serious or significant.’