May 2026: Thirlwall Inquiry report delayed to at least September 2026 · six-baby inquests relisted to 2027 · CCRC review active · Shoo Lee Panel: no medical evidence of deliberate harm.
The Crown alleged Babies A and B, monochorionic twins, deteriorated as a direct result of deliberate harm by Lucy Letby acting on consecutive shifts.
Monochorionic twins share a single placenta and are at substantially elevated risk of twin-twin transfusion syndrome (TTTS), in which unbalanced placental vascular connections produce one anaemic and one polycythaemic twin. TTTS carries 60-100% mortality without intervention and remains a leading cause of monochorionic-twin neonatal death even with modern management. Sequential deteriorations in monochorionic twins are not anomalous — they are the expected pattern when underlying placental pathology is shared. Independent paediatric review of the antenatal Doppler studies and placental histology in Babies A and B is part of the CCRC submission material. The Panel's case-by-case findings identified natural-cause mechanisms consistent with the deteriorations.
Sequential deterioration in monochorionic twins sharing a placenta is not the signature of deliberate harm — it is the textbook signature of shared placental pathology, of which TTTS is the leading specific diagnosis.
The twin pregnancy was acknowledged but the specific TTTS differential and its mortality statistics were not foregrounded as a unifying natural-cause explanation for sequential deteriorations.
The Panel's findings for Babies A and B identify natural-cause mechanisms consistent with monochorionic-twin pathology and inconsistent with the prosecution's air-embolism mechanism on physiological grounds.