"In my judgment the following principles should be deduced from these authorities. (1) Consent to the removal of the child must be clear and unequivocal. (2) Consent can be given to the removal at some future but unspecified time or upon the happening of some future event. (3) Such advance consent must, however, still be operative and in force at the time of the actual removal. (4) The happening of the future event must be reasonably capable of ascertainment. The condition must not have been expressed in terms which is too vague or uncertain for both parties to know whether the condition will be fulfilled. Fulfilment of the condition must not depend on the subjective determination of one party, for example, 'Whatever you may think, I have concluded that the marriage has broken down and so I am free to leave with the child.' The event must be objectively verifiable. (5) Consent, or the lack of it, must be viewed in the context of the realities of family life or, more precisely, in the context of the realities of the disintegration of family life. It is not to be viewed in the context of nor governed by the law of contract. (6) Consequently consent can be withdrawn at any time before actual removal. If it is, the proper course is for any dispute about removal to be resolved by the courts of the country of habitual residence before the child is removed. (7) The burden of proving the consent rests on him or her who asserts it. (8) The enquiry is inevitably fact-specific and the facts and circumstances will vary infinitely from case to case. (9) The ultimate question is a simple one even if a multitude of facts bear upon the answer. It is simply this: had the other parent clearly and unequivocally consented to the removal?"
"For all these reasons, the principled answer to the question whether repudiatory retention is possible in law is that it is. The objections to it are insubstantial whereas the arguments against requiring the left-behind parent to do nothing when it is clear that the child will not be returned are convincing and conform to the scheme of the Abduction Convention. The remaining question is what is needed to constitute such repudiatory retention."
"As with any matter of proof or evidence, it will be unwise to attempt any exhaustive definition. The question is whether the travelling parent has manifested a denial, or repudiation, of the rights of the left-behind parent. Some markers can, however, be put in place. (i) It is difficult if not impossible to imagine a repudiatory retention which does not involve a subjective intention on the part of the travelling parent not to return the child (or not to honour some other fundamental part of the arrangement). The spectre advanced of a parent being found to have committed a repudiatory retention innocently, for example by making an application for temporary permission to reside in the destination State, is illusory. (ii) A purely internal unmanifested thought on the part of the travelling parent ought properly to be regarded as at most a plan to commit a repudiatory retention and not itself to constitute such. If it is purely internal, it will probably not come to light in any event, but even supposing that subsequently it were to do so, there must be an objectively identifiable act or acts of repudiation before the repudiation can be said to be wrongful. That is so in the case of ordinary retention, and must be so also in the case of repudiatory retention. (iii) That does not mean that the repudiation must be communicated to the left-behind parent. To require that would put too great a premium on concealment and deception. Plainly, some acts may amount to a repudiatory retention, even if concealed from the left-behind parent. A simple example might be arranging for permanent official permission to reside in the destination State and giving an undertaking that the intention was to remain permanently. (iv) There must accordingly be some objectively identifiable act or statement, or combination of such, which manifests the denial, or repudiation, of the rights of custody of the left-behind parent. A declaration of intent to a third party might suffice, but a privately formed decision would not, without more, do so."
"I think that Ms Chokowry's approach is sensible and adopt it here, with my own amendments. (i) The habitual residence of a child corresponds to the place which reflects some degree of integration by the child in a social and family environment (A v A, adopting the European test). (ii) The test is essentially a factual one which should not be overlaid with legal sub-rules or glosses. It must be emphasised that the factual enquiry must be centred throughout on the circumstances of the child's life and that is most likely to illuminate his habitual residence (A v A, Re KL). (iii) In common with the other rules of jurisdiction in (EC) 2201/2003 (Brussels IIA) its meaning is 'shaped in the light of the best interests of the child, in particular on the criteria of proximity.' Proximity in this context means 'the practical connection between the child and the country concerned': A v A (para 80(ii)); Re B (para 42) applying Mercredi v Chaffe ... (iv) It is possible for a parent unilaterally to cause a child to change habitual residence [that does not apply here] ... (v) A child will usually but not necessarily have the same habitual residence as the parents who care for him or her ... The younger the child, the more likely the proposition, however, this is not to eclipse the fact that the investigation is child-focused. It is the child's habitual residence which is in question and, it follows, the child's integration which is under consideration. (vi) Parental intention is relevant to the assessment, but not determinative. (vii) It will be highly unusual for a child to have no habitual residence. Usually a child loses a pre-existing habitual residence at the same time as gaining a new one ... (viii) In assessing whether a child has lost a pre-existing habitual residence and gained a new one, the court must weigh up the degree of connection which the child had with the state in which he resided before the move (Re B, see in particular the guidance at paragraph 46). (ix) It is the stability of a child's residence as opposed to its permanence which is relevant, though this is qualitative and not quantitative, in the sense that it is the integration of the child into the environment rather than a mere measure of the time a child spends there ... (x) The relevant question is whether a child has achieved some degree of integration in social and family environment; it is not necessary for a child to be fully integrated before becoming habitually resident ... (xi) The requisite degree of integration can, in certain circumstances, develop quite quickly (Article 9 ... envisages within three months). It is possible to acquire a new habitual residence in a single day (A v A; Re B). In the latter case, Lord Wilson referred (paragraph 45) to those 'first roots' which represent the requisite degree of integration and which a child will 'probably' put down 'quite quickly' following a move. (xii) Habitual residence is a question of fact focused upon the situation of the child, with the purpose and intention of the parents being merely among the relevant factors."