Grant Yuill has been jailed for eight years A father found guilty of giving the drug methadone to his baby daughter in a bottle of milk has been jailed for eight years.
Grant Yuill, 38, of Porthmadog, Gwynedd, was also convicted of supplying drugs to the baby’s mother.
The child, who cannot be named, has been taken into care. Caernarfon Crown Court was told exposure to the drug had affected her development.
Yuill was previously cleared of rubbing methadone into his daughter’s gums.
He was also found guilty of child cruelty and putting the baby’s mother in fear of violence.
Judge Merfyn Hughes QC said the child was particularly vulnerable, adding that Yuill had abused his position of trust as a father.
He told Yuill: “You were the driving force behind the decision to do this.”
The judge described it as “serious cruelty” to the baby over a period of time.
He added: “It will only be when she’s approaching school age that the full impact of what you have done to her will become known.”
Responding to the judge’s comments during the trial, the Betsi Cadwaladr University Health Board said it was “absolutely confident that staff acted professionally and appropriately”.
A trust spokesman said it was staff vigilance that “ensured that the situation was brought to light”.
Iwan Trefor Jones, chair of the Gwynedd and Anglesey Local Safeguarding Children Board, said the board had completed a serious case review into the incident.
He added that the board “remains determined to openly establish whether there are lessons to be learnt to improve inter-agency working to safeguard children and act upon recommendations made”.
Yuill was found guilty of five offences of supplying methadone to the baby, and supplying methadone and heroin to the mother.
In February last year, she was jailed for three years for supplying methadone to the infant and child cruelty.
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