“i) All are agreed that habitual residence is a question of fact and not a legal concept such as domicile. There is no legal rule akin to that whereby a child automatically takes the domicile of his parents. ii) It was the purpose of the 1986 Act to adopt a concept which was the same as that adopted in the Hague and European Conventions. The Regulation must also be interpreted consistently with those Conventions. iii) The test adopted by the European Court is "the place which reflects some degree of integration by the child in a social and family environment" in the country concerned. This depends upon numerous factors, including the reasons for the family's stay in the country in question. iv) It is now unlikely that that test would produce any different results from that hitherto adopted in the English courts under the 1986 Act and the Hague Child Abduction Convention. v) In my view, the test adopted by the European Court is preferable to that earlier adopted by the English courts, being focussed on the situation of the child, with the purposes and intentions of the parents being merely one of the relevant factors. The test derived from R v Barnet London Borough Council, ex p Shah should be abandoned when deciding the habitual residence of a child. vi) The social and family environment of an infant or young child is shared with those (whether parents or others) upon whom he is dependent. Hence it is necessary to assess the integration of that person or persons in the social and family environment of the country concerned. vii) The essentially factual and individual nature of the inquiry should not be glossed with legal concepts, which would produce a different result from that which the factual inquiry would produce. viii) As the Advocate General pointed out in para 45 and the court confirmed in para 43 of proceedings brought by A, it is possible that a child may have no country of habitual residence at a particular point in time.”
“90. Finally, on the issue of habitual residence, given the circumstances of this case, it is relevant to note that habitual residence can change from one state to another extremely quickly. 91. In A v A, at [44], in a passage approved by Lord Wilson in In re B at [39], Lady Hale made clear that she did not “accept that it is impossible to become habitually resident in a single day. It will all depend on the circumstances”
“(b) the greater the amount of adult pre-planning of the move, including prearrangements for the child's day-to-day life in the new state, probably the faster his achievement of that requisite degree; and (c) were all the central members of the child's life in the old state to have moved with him, probably the faster his achievement of it and, conversely, were any of them to have remained behind and thus to represent for him a continuing link with the old state, probably the less fast his achievement of it.”
“[63] The quality of a child's stay in a new environment, in which he has only recently arrived, cannot be assessed without reference to the past. Some habitual residences may be harder to lose than others and others may be harder to gain. If a person leaves his home country with the intention of emigrating and having made all the necessary plans to do so, he may lose one habitual residence immediately and acquire a new one very quickly. If a person leaves his home country for a temporary purpose or in ambiguous circumstances, he may not lose his habitual residence there for some time, if at all, and correspondingly he will not acquire a new habitual residence until then or even later. Of course, there are many permutations in between, where a person may lose one habitual residence without gaining another.”
“This will involve a real and detailed consideration of (inter alia): the child's day to day life and experiences; family environment; interests and hobbies; friends etc and an appreciation of which adults are most important to the child. The approach must always be child driven.”
“the requested state is not bound to order the return of the child if the person, institution or other body which opposes its return establishes that—……. (b) there is a grave risk that his or her return would expose the child to physical or psychological harm or otherwise place the child in an intolerable situation … The judicial or administrative authority may also refuse to order the return of the child if it finds that the child objects to being returned and has attained an age and degree of maturity at which it is appropriate to take account of its views.”
“there is an established line of authority that the court should require clear and compelling evidence of a grave risk of harm or other intolerability which must be measured as substantial, not trivial, and of a severity which is much more than is inherent in the inevitable disruption, uncertainty and anxiety which follows an unwelcome return to the jurisdiction of habitual residence.”