Donna Ockenden has spent much of the past fortnight reading two reports that describe the same failing system twice. First came her own findings on Nottingham University Hospitals NHS Trust, where more than 500 mothers and babies suffered avoidable harm or death inside what she called a toxic culture. Days later came Baroness Valerie Amos's long-awaited national investigation, drawing on evidence from 450 families and 12 trusts across England. When asked what she made of it, Ockenden did not reach for diplomacy. The Amos report, she said, had taught her nothing new.

That response captures the uneasy mood surrounding what the government has billed as a watershed moment. Health Secretary James Murray told the Commons the findings were chilling and promised a comprehensive action plan by the end of the year. Amos's report identifies fragmentation, poor accountability and what it terms medical misogyny running through maternity services, with women repeatedly reporting that they were not listened to when they raised concerns. Its central recommendation is a statutory Maternity and Neonatal Commissioner, accountable to Parliament and co-chairing a new taskforce with the Secretary of State. The government has already accepted the proposal and committed £41 million toward immediate safety risks, on top of £145 million pledged since April last year.

The trouble is that structural fixes of this kind have been tried before. Ockenden's own point, echoed by campaigners, is that the NHS has accumulated hundreds of maternity recommendations over the past decade with little to show for the exercise. A new oversight role does not automatically dismantle the defensive institutional habits that let harm go unexamined in the first place, particularly when trusts have historically judged their own care to contain no errors worth investigating. The resignation of Dr Bill Kirkup, who advised the review before stepping down in a dispute over how to forcefully address so-called normal birth ideology, suggests the process of building consensus around the report was itself strained.

Bereaved families, organised through the Maternity Safety Alliance, have gone further than scepticism. They regard the commissioner model as dangerous, arguing it concentrates authority in a single appointee rather than compelling the kind of sworn testimony and disclosure that only a statutory public inquiry can produce. Amos has defended her approach on practical grounds, noting that full inquiries can take years to conclude, time that families affected by ongoing failures may not have. It is a genuine dilemma rather than a rhetorical one. Speed and depth are pulling in different directions, and the choice between them says something about how the state weighs urgency against thoroughness when trust has already broken down.

There is also an irony sitting close to the surface of this story. Ockenden, the person publicly least convinced that the new architecture will work, is widely regarded as the most credible candidate to run it. Asked directly whether she would take the commissioner role, she offered nothing firmer than curiosity about the question itself. Her hesitation is worth noting. It suggests that even the figure best placed to make the position succeed is not yet persuaded the role has been designed with enough teeth to justify taking it on.

What happens next will test whether Whitehall has understood the distinction between producing a report and changing an institution. Triage failures, workforce shortfalls and a culture in which complaints are absorbed rather than acted upon were all documented years before Nottingham became a byword for institutional failure. The Amos review restates that diagnosis with new evidence behind it, but restating a diagnosis is not the same as curing the disease. December is the deadline for a National Action Plan. Whether it earns the confidence of the people who have already sat through this cycle once, including the woman the government may yet ask to lead the reform, will depend on whether it looks meaningfully different from what came before it.