“20. For habitual residence to be established the residence of the child must reflect some degree of integration in a social and family environment (Area of Freedom, Security and Justice) (C-532/01)[2009] 2 FLR 1 and Re A (Jurisdiction: Return of Child)[2014] 1 AC 1 ). Whether there is some degree of integration by the child in a social and family environment is a question of fact to be determined by the national court, taking into account all the circumstances specific to the individual case. Habitual residence must be established on the basis of all the circumstances specific to the individual case (Case C-523/07 [2010] Fam 42 ). With respect to those circumstances, in Re A (Area of Freedom, Security and Justice) and Mercredi v Chaffe[2011] 2 FLR 515 , the Court of Justice of the European Union identified the following, non-exhaustive, list of circumstances that might be relevant in a given case: i) Duration, regularity and conditions for the stay in the country in question. ii) Reasons for the parents move to and the stay in the jurisdiction in question. iii) The child’s nationality. iv) The place and conditions of attendance at school. v) The child’s linguistic knowledge. vi) The family and social relationships the child has. vii) Whether possessions were brought, whether there is a right of abode and whether there are durable ties with the country of residence or intended residence. 21. In a series of decisions, namely Re KL (A Child)[2014] 1 FLR 772 , Re L (A Child) (Custody: Habitual Residence) (Reunite International Child Abduction Centre intervening)[2014] 1 FLR 772 , Re LC (Children) (Reunite International Child Abduction Centre intervening)[2014] 1 FLR 1486 , Re R (Children) (Reunite International Child Abduction Centre and others intervening)[2015] 2 FLR 503 and Re B (A child) (Habitual Residence: Inherent Jurisdiction)[2016] 1 FLR 561 the Supreme Court has articulated the following principles of general application with respect to the question of habitual residence: i) It is the child's habitual residence which is in question and hence the child's level of integration in a social and family environment which is under consideration by the court determining the question of habitual residence. ii) In common with the other rules of jurisdiction, the meaning of habitual residence is shaped in the light of the best interests of the child, in particular on the criterion of proximity. Proximity in this context means the practical connection between the child and the country concerned. iii) In assessing whether a child has lost a pre-existing habitual residence and gained a new one, the court must also weigh up the degree of connection which the child had with the state in which he resided before the move. iv) 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. v) 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 measurement of the time a child spends there. vi) In circumstances where the social and family environment of an infant or young child is shared with those on whom she is dependent, it is necessary to assess the integration of that person or persons (usually the parent or parents) in the social and family environment of the country concerned. vii) In respect of a pre-school child, the circumstances to be considered will include the geographic and family origins of the parents who effected the move. viii) The requisite degree of integration can, in certain circumstances, develop quite quickly. It is possible to acquire a new habitual residence in a single day. There is no requirement that the child should have been resident in the country in question for a particular period of time. The deeper the child’s integration in the old state, probably the less fast his or her achievement of the requisite degree of integration in the new state. Likewise, the greater the amount of adult pre-planning of the move, including pre-arrangements for the child’s day-to-day life in the new state, probably the faster his or her achievement of that requisite degree. In circumstances where all of the central members of the child’s life in the old state to have moved with him or her, probably the faster his or her achievement of habitual residence. Conversely, were any of the central family members have remained behind and thus represent for the child a continuing link with the old state, probably the less fast his or her achievement of habitual residence. ix) A child will usually, but not necessarily, have the same habitual residence as the parent(s) who care for him. The younger the child the more likely that proposition but this is not to eclipse the fact that the investigation is child focused. x) Parental intention is relevant to the assessment, but not determinative. There is no requirement that there be an intention on the part of one or both parents to reside in the country in question permanently or indefinitely. Parental intent is only one factor, along with all other relevant factors, that must be taken into account when determining the issue of habitual residence. 22. Restrictions imposed by the COVID-19 pandemic do not prevent the acquisition of habitual residence (see JM v RM (Abduction: Retention: Acquiescence)[2021] EWHC 315 (Fam) ). 23. In considering the question of habitual residence, it is not necessary for the court to make a searching and microscopic enquiry (Re B (Minors)(Abduction)(No 1)[1993] 1 FLR 988 ).”