"We know that the Department for Education reported more serious injuries and deaths of children during the last year with a higher percentage in the first six months - so we do know that lockdown had a significant impact on children and families," Helen Westerman, from the NSPCC, said.

She said children were "the hidden victims of this pandemic" and that the charity had seen an increase of 23% in calls from adults concerned about a child's welfare.

Arthur's case was "horrendous, horrific and heart-breaking," the NSPCC said and the charity called for the serious case review to "establish the lessons that need to be learned to prevent this awful case from happening again".

From prison, Arthur's mother said the memory of her young son she would treasure the most was his smile. Arthur wasn't just her only son, Labinjo-Halcrow said, but her best friend with a gentle and caring nature.

She wants the world to remember her son, not for the harrowing end to his short life, but for his superpower - his smile.

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