The investigation has been opened by Nottinghamshire Police into maternity care failings that led to the deaths and injuries of babies in Nottingham.
It forms part of Operation Perth, the ongoing criminal probe into care at the Queen’s Medical Centre and Nottingham City Hospital, which are both run by Nottingham University Hospitals Trust (NUH).
The investigation is also running alongside the inquiry led by independent midwife Donna Ockenden looking into injuries and deaths of mothers and babies at NUH dating back to 2012.
In a joint letter, Ms Campbell and Mr Norris, along with fellow Labour MPs Adam Thompson MP (Erewash), James Naish (Rushclife), Michelle Welsh (Sherwood Forest), Michael Payne (Gedling), Nadia Whittome (Nottingham East), Steve Yemm (Mansfield) and Lilian Greenwood (Nottingham South) said: “We, the undersigned Members of Parliament representing constituencies across Nottinghamshire, write to express our full support for the corporate manslaughter investigation into NUH concerning its maternity services.
“The decision by Nottinghamshire Police to initiate this investigation follows the tragic deaths and serious harm experienced by potentially over 2,000 babies and women due to alleged failures in maternity care at NUH.
"This inquiry, the largest of its kind in the NHS, is a critical step towards ensuring accountability and justice for the affected families.
"As MPs, we have been deeply moved by the accounts of families who have suffered unimaginable losses.
"Their courage in coming forward has been instrumental in bringing these issues to light.
"Acknowledging the ongoing independent review led by Donna Ockenden, we believe that the corporate manslaughter investigation is essential to address potential organisational negligence.
“This dual approach ensures a comprehensive examination of both systemic issues and individual cases, fostering a culture of transparency and improvement within our healthcare system.
"We urge all relevant authorities to conduct their investigations thoroughly and impartially, ensuring that lessons are learned, and necessary reforms are implemented.
"Our collective goal is to restore public confidence in maternity services and to guarantee the safety and well-being of mothers and babies in Nottinghamshire and beyond.
"We stand in solidarity with the affected families and reaffirm our commitment to supporting them through this process.”