The NSPCC report has revealed that calls about child neglect have doubled in the past two years, and are up by a third in the last year alone.
The charity warned the sharp increase is placing additional pressure on already stretched children's services, with more children being taken into care and families being affected by cuts.
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The 17-year-old was trapped for 30 hours in Australian shrubland but there was no report of a road accident to help the search.
The expansion of the probe came as Jeremy Corbyn declared Carillion's demise a "watershed moment" that should end "rip-off privatisation".
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