Two men have been arrested by police looking into an NHS trust at the centre of Britain's largest maternity scandal. The men, aged 55 and 59, were held in connection with operating practices at the mortuary service provided by Nottingham University Hospitals (NUH) NHS Trust.The trust is at the centre of Britain's largest maternity scandal with a report due out on Wednesday expected to reveal the trust hid staff blunders and dismissed mothers' concerns during an institutional cover-up of baby deaths. Senior leaders downgraded nurse failings over a decade to avoid scrutiny by regulators, coroners and families, expert midwife Donna Ockenden will say. Ms Ockenden, whose team examined more than 2,500 cases, will conclude that poor care led to hundreds of avoidable mother and baby deaths, stillbirths and cases of severe brain damage in children.While the expert midwife spoke to more than 800 staff at the trust, it is understood that half of the 60 former senior executives and directors she approached refused to answer questions about their role in the scandal. In total 150 doctors and midwives are being assessed over complaints about their fitness to practise and could be permanently struck off. Nottingham University Hospitals NHS Trust has already paid out millions of pounds in compensation and fines after being prosecuted for poor care.On Monday, Nottinghamshire Police said officers from Operation Perth - which is the force's investigation into maternity services at both hospitals - discovered breaches of regulations of the Human Tissue Act in relation to the management and operating practices of the mortuary services.NUH operates mortuary services at both Queen's Medical Centre and City Hospital.The men were arrested on Monday on suspicion of misconduct in a public office, Nottinghamshire police said. Deputy Chief Constable Rob Griffin added: 'We recognise this will be particularly distressing for families.'We appreciate that this development comes only a few days before the publication of the independent maternity review, led by Donna Ockenden, which will be an important but difficult time for families.'We have contacted the families who we have already identified as being directly impacted by the issues established within the NUH trust mortuaries.'As the investigation progresses, we will contact other families who have been directly affected as soon as they are identified.'NUH has already paid out millions of pounds in compensation and fines after being prosecuted for poor care.Nottinghamshire Police launched a corporate manslaughter case last year as part of a wider criminal investigation into maternity failings at the trust.Regulators the General Medical Council (GMC) and Nursing and Midwifery Council (NMC) are also investigating allegations against individual staff.A coroner has previously criticised the trust over the way a mother's placenta was dealt with after the death of a newborn baby.Quinn Lias Parker was born at Nottingham's City Hospital in July 2021 but died two days later from multiple organ failure.It later emerged the placenta - a key organ required for a full paediatric post-mortem examination to determine why a baby died - was dissected by pathology staff when it should have been preserved.In a prevention of future deaths report, Dr Elizabeth Didcock, assistant coroner for Nottinghamshire, said the dissection meant the post-mortem examination was compromised.The baby's mother Emmie Studencki had been previously admitted to hospital a number of times after suffering bleeding, the report said.After Quinn's birth, Ms Studencki's placenta was sent from the hospital's maternity unit to pathology, where it was dissected.But Dr Didcock said: 'What is clear is that the outcome has been highly detrimental to the independent investigation by the coroner and other agencies investigating the circumstances of this case.'This death follows a number of similar early neonatal deaths in Nottingham, where the placenta has not been retained, and therefore key information regarding placental pathology has been lost.'In a joint statement, Quinn's father Ryan Parker and mother Ms Studencki said: 'Let's be clear, this is the destruction of an organ, the prevention of a conclusive post-mortem and a significant challenge to the coroner's ability to investigate the cause of our son's death.'The trust denied us a full post-mortem into our son's death.'