‘The assessment of the seriousness or significance of the breach should not, initially at least, involve a consideration of other unrelated failures that may have occurred in the past. At the first stage, the court should concentrate on an assessment of the seriousness and significance of the very breach in respect of which relief from sanctions is sought. We accept that the court may wish to take into account, as one of the relevant circumstances of the case, the defaulter's previous conduct in the litigation (for example, if the breach is the latest in a series of failures to comply with orders concerning, say, the service of witness statements). We consider that this is better done at the third stage (see para 36 below) rather than as part of the assessment of seriousness or significance of the breach.’