A major maternity inquiry in England is compiling evidence from patients and healthcare staff, described as the largest of its kind in the NHS. According to the Evening Standard, more than 2,500 families and over 800 members of staff have contributed to the investigation. The outlet reports that the evidence indicates that over 500 mothers and babies have either died or suffered potentially avoidable harm. The inquiry’s findings are being assessed through accounts and records provided by those directly involved in maternity care. The reporting characterizes the scale of participation—spanning thousands of families and hundreds of staff—as a key feature of the review. While the specific cases and underlying causes are not detailed in the provided excerpt, the focus is on whether harms were avoidable and how maternity services respond to risks during pregnancy, childbirth, and the postnatal period. The inquiry is ongoing, with the number of affected individuals and the breadth of contributions forming central elements of the current reporting.