“…The judge then surveyed the law on jurisdiction, citing ss. 1, 2, 2A, 3 and 42 of the FLA 1986 and the decisions in Lachaux v Lachaux [2019] EWCA Civ 738, [2019] 4 WLR 86; Re A (Jurisdiction: Family Law Act 1986) (Application for Amplification) [2021] EWFC 105; Re A (Children) [2013] UKSC 60, [2014] AC 1; Re B (…”