“… decisions of this court in Re M (Declaration of Death of Child) [2020] EWCA Civ 164, [2020] 4 WLR 52 (‘Re M’), and Barts Health NHS Trust v Dance & Battersbee [2022] EWCA Civ 935, [2022] 4 WLR 83, [2023] 1 FLR 731 (‘Dance’). He also considered arguments about whether Mr Casey, who had been joined as a party at the outset of the proceedi…”