Eight days before publication, a version of the report that Dr Bill Kirkup had helped shape simply vanished. The section he cared about most, an unflinching account of how the pursuit of natural birth at any cost had cost lives, was gone by the time Baroness Valerie Amos's 181-page review reached the printers. Kirkup, the physician who chaired the inquiries into Morecambe Bay and East Kent, resigned as expert adviser to the National Maternity and Neonatal Investigation rather than put his name to what remained.

His departure has turned what should have been a moment of political consensus into a public rupture between two people who agree on almost everything except the one issue that keeps recurring in Britain's worst maternity scandals.

Kirkup's complaint is specific. He says investigators working for the review found evidence that so-called normal birth ideology, the institutional preference for vaginal delivery over medical intervention, remained a live problem in some of the twelve trusts examined, and that a significant number of contributors had signed off language reflecting this before it disappeared from the final text. Amos's published conclusion goes the other way: her team did not find that normal birth ideology was currently widespread in the services they visited. Asked to respond to Kirkup directly, she declined to comment. He has said only that she listened to the wrong voices.

Neither side is arguing from nowhere. Over the past 20 years, there has been a significant shift in the demographic demands on maternity care. Rising maternal age and higher rates of obesity mean a larger share of pregnancies now carry genuine clinical complexity, and the same institutional habits that once treated caesarean rates as a target to suppress have proved catastrophic when applied uncritically. In both Morecambe Bay and Shrewsbury, trusts pursued low rates of intervention while infants and mothers perished. That history is precisely why Kirkup's intervention lands as more than a professional disagreement. It reopens a question the NHS has never fully closed.

Amos's study did not avoid challenges in other areas. It found chronic understaffing, maternity wards operating in unsafe or outdated buildings, racism shaping the quality of care mothers of colour received, and a persistent failure across trusts to act when families raised concerns. These findings, rather than the ideology dispute, form the backbone of the government's response. A complete national plan of action by the end of the year, £41 million for critical safety and infrastructure fixes, and the selection of England's first maternity and neonatal standards commissioner, who will jointly lead a new national task force with the Secretary of State, are all commitments made by Health Secretary James Murray, who has referred to the report as a watershed moment. To prevent women from being disregarded when they most require to be heard, a 24/7 triage line manned by midwives is being implemented.

None of this resolves what Kirkup raised, and that is the uncomfortable part for ministers now moving at pace. A commissioner with genuine authority, new triage standards, and additional capital funding can address staffing gaps and crumbling estates. They cannot settle a cultural argument within the profession about what a safe birth looks like, nor can they compel consensus between camps that have been talking past each other since Morecambe Bay. Donna Ockenden, who led the Nottingham inquiry and is tipped as a possible commissioner herself, has already said the Amos findings taught her nothing new, which is itself a verdict on how long these patterns have been documented and how little has changed in practice.

The government's structural response is credible and, on the evidence of the report's other findings, overdue. But a system that cannot agree internally on why some mothers were denied caesareans they asked for, or whether ideology played any part in that refusal, is not yet equipped to guarantee it will not happen again. Kirkup's departure was not mentioned in passing in the Amos assessment. It was a warning that the review may have answered the wrong question.