19 While, in an appropriate case, there will be need for some more extensive consideration of these and other more recent decisions, in this present case it seems to me to be critical, on any view of the authorities, that judgment was entered in default of defence to the purported amended statement of claim filed and served on 5 July 2000. Yet that purported amended statement of claim had not been regularly filed. It was not in a form fit for filing as an amended statement of claim and, in my view of what occurred when filing was attempted, it was not accepted for filing as an amended statement of claim. Having regard to what occurred and the practice of this Court, the events indicate that the document was received into the Registry as a minute of a proposed amendment. In my view until the amended statement of claim was regularly filed it had no force or effect as an amended statement of claim for the purposes of the Rules and in particular O 21 r 3(1). It would follow that there could not be regular service of it as an amended statement of claim for the purposes of the Rules, and the time for filing a defence to it pursuant to O 21 r 3(2)(b) had not commenced to run. If that be so, the defendants were not in default of filing their defence to it on 20 July 2000 when the order was made for judgment to be entered in default of defence. In my view, the irregularity in filing on 5 July 2000 had the effect, in this case, that the plaintiffs had no entitlement to enter judgment on the basis on which they applied to do so and on which the order was made. In these circumstances, in my view, by virtue of the irregularity in the filing the defendants are entitled ex debito justitiae to have the default judgment set aside.