On an application to revoke an order made under the 1980 Hague Child Abduction Convention, Mostyn J has held in TF v PJ [2014] EWHC 1780 (Fam)  that the reference in the Family Procedure Rules 2010 r.4.1(6) to the court having a power to vary or revoke an order made under the rules was not confined to procedural or case management orders.  Rather, it could apply equally to final orders such that (for instance) a High Court judge may vary or revoke a substantive final order made by another High Court judge.  Applying dicta from the Court of Appeal in civil cases (Tibbles v SIG Plc [2012] EWCA Civ 518, [2012] 1 WLR 2591 and Mitchell v News Group Newspapers [2013] EWCA Civ 1537, [2014] 1 WLR 795, Mostyn J held that the only circumstances where the rule could be invoked were where there had been non-disclosure or a significant change of circumstances. It is suggested that this approach holds equally true to the provisions of rule 25(6) of COPR 2007 which provides – in identical terms to FPR 2010 r 4.1(6) – that “A power of the court under these Rules to make an order includes a power to vary or revoke the order.” [A version of this note appeared in theJuly 2014 Thirty Nine Essex Street Mental Capacity Law Newsletter]