Mrs O’Leary, 50, from Bootle, said: “This happened for many years at different hospitals and people simply don’t know that their child could be involved.

“It breaks my heart that these children will have their funeral without their families, but it is about time they were treated with dignity and given a burial.”

A spokeswoman for Alder Hey said: “Alder Hey Children’s NHS Foundation Trust and the University of Liverpool are to complete the respectful interment of unclaimed retained organs, foetuses and tissue samples held in their possession in a final burial ceremony on Friday, January 29.

“This is the final part of a process developed by the Trust and the University over the last few years and which is compliant with the Human Tissue Authority’s Code of Practice on disposal.

“Those parents who have had organ retention confirmed, but who took no further action at that time, are advised to contact the helpline and inquiry service if they have any concerns or questions about the burial process.”

The helpline can be contacted on 0800 073 2030 and will be operational until the end of March this year.

The final burial will take place at Allerton Cemetery, Woolton Road, Allerton.

The memorial service will take place at All Souls Church, Mather Avenue, Allerton, Liverpool, at 10am on February 26 followed by a dedication ceremony for the Memorial Garden at Allerton Cemetery at 11am.