CHILD serial killer Lucy Letby has formally lodged a bid to challenge her conviction at the Court of Appeal, officials have confirmed.

Court staff said today (Friday) that they had received an application for permission to appeal.

The 33-year-old, who is orginally from Arran Avenue in Hereford, was sentenced to a whole life order after she was convicted of murdering seven babies and attempting to kill a further six at the Countess of Chester Hospital's neonatal unit in 2015 and 2016.

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Her conviction means she is the most prolific child serial killer in modern British history, and is only the fourth woman to be told she will never be released from prison.

The others are Moors murderer Mya Hindley, who died in 2002, Rose West, who collaborated with her husband, Fred, to torture and kill at least nine young women, and Joanna Dennehy, who killed three men in Cambridgeshire before stabbing two walkers in Hereford.  

The Department of Health has previously said that an independent inquiry will be held into Letby’s case, and will examine “the circumstances surrounding the deaths and incidents – including how concerns raised by clinicians were dealt with”.