Some 201 babies might have survived had better maternity care been provided by an NHS trust, the BBC has learned.
Dozens of other children sustained life changing injuries as a result of the failure to provide adequate treatment.
Mothers also died or sustained injuries as a result of failures by the Shrewsbury and Telford NHS Trust.
The trust has previously said it takes “full responsibility” for the failures in maternity care and “offered their sincere apologies.”
A report from senior midwife Donna Ockenden, who has been leading a five-year inquiry into maternity care at the trust, will be published at 10:00 BST on Wednesday.
The scale of failures uncovered is unprecedented in the history of NHS maternity care.
Significant or major concerns over the maternity care provided by the trust were found in 201 deaths – 131 stillbirths and 70 neonatal deaths.
The vast majority of cases date from 2000 to 2019.
Publication of the full report has twice been delayed. The NHS has been working to get indemnity cover to deal with any potential legal action following the publication.
Ms Ockenden’s team has been examining 1,862 cases – thought to be the largest ever review of maternity care in the NHS.
Families in Shropshire, who campaigned for years to get an independent review into maternity failures across the county, long suspected this would be the conclusion – but the scale of the numbers involved is likely to come as a shock to many.
The trust has previously apologised and also pointed out the investment and improvements made in maternity care across the NHS in England.
A criminal investigation is being conducted by West Mercia Police into what happened at the trust.
That the Ockenden inquiry was ordered is largely down to the work of two mothers who lost their babies due to failures of care by the trust.
Rhiannon Davies fought for years to uncover the truth about the death of her daughter Kate in 2009. It took the board of the trust until April 2016 to apologise, and accept that Kate’s death was avoidable.
Kayleigh Griffiths’ baby Pippa died at 31 hours old in April 2016, and a few weeks later Ms Griffiths emailed Ms Davies hoping for advice on how to hold the trust to account.
A year later a coroner ruled that Pippa’s death had also been avoidable.
The two women began to scour the internet, coroners’ records and death notices to see if any other families had received poor maternity care at the Shropshire trust, and they collated 23 cases going back to 2000.
They wrote to the then health secretary Jeremy Hunt in December 2016 asking for an investigation. He agreed and in May 2017, Donna Ockenden was appointed to lead the review.
Shropshire is not the only area where maternity care has been called into question – in recent years independent investigations have been ordered into maternity services in Cumbria, East Kent, Nottingham and South Wales.
The latest Care Quality Commission (CQC) figures show 41% of units need to improve their safety, and just 1% are rated outstanding. The CQC says the rate of improvement is not good enough.
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