"The removal or the retention of a child is to be considered wrongful where – (a) it is in breach of rights of custody attributed to a person, an institution or any other body, either jointly or alone, under the law of the State in which the child was habitually resident immediately before the removal or retention; and (b) at the time of removal or retention those rights were actually exercised, either jointly or alone, or would have been so exercised but for the removal or retention."
“(1) The removing parent must prove consent to the civil standard. The inquiry is fact-specific and the ultimate question is: had the remaining parent clearly and unequivocally consented to the removal? (2) The presence or absence of consent must be viewed in the context of the common sense realities of family life and family breakdown, and not in the context of the law of contract. The court will focus on the reality of the family's situation and consider all the circumstances in making its assessment. A primary focus is likely to be on the words and actions of the remaining parent. The words and actions of the removing parent may also be a significant indicator of whether that parent genuinely believed that consent had been given, and consequently an indicator of whether consent had in fact been given. (3) Consent must be clear and unequivocal but it does not have to be given in writing or in any particular terms. It may be manifested by words and/or inferred from conduct. (4) A person may consent with the gravest reservations, but that does not render the consent invalid if the evidence is otherwise sufficient to establish it. (5) Consent must be real in the sense that it relates to a removal in circumstances that are broadly within the contemplation of both parties. (6) Consent that would not have been given but for some material deception or misrepresentation on the part of the removing parent will not be valid. (7) Consent must be given before removal. Advance consent may be given to removal at some future but unspecified time or upon the happening of an event that can be objectively verified by both parties. To be valid, such consent must still be operative at the time of the removal. (8) Consent can be withdrawn at any time before the actual removal. The question will be whether, in the light of the words and/or conduct of the remaining parent, the previous consent remained operative or not. (9) The giving or withdrawing of consent by a remaining parent must have been made known by words and/or conduct to the removing parent. A consent or withdrawal of consent of which a removing parent is unaware cannot be effective.”
"if the court does not follow the approach referred to above, it would create the inevitable prospect of the court's evaluation falling between two stools. The court's "process of reasoning", to adopt the expression used by Lord Wilson in Re S, at [22], would not include either (a) considering the risks to the child or children if the allegations were true; nor (b) confidently discounting the possibility that the allegations gave rise to an Article13(b) risk. The court would, rather, by adopting something of a middle course, be likely to be distracted from considering the second element of the Re E approach, namely "how the child can be protected against the risk" which the allegations, if true, would potentially establish."