Four councils in the North West are "inadequate" at caring for some of the most vulnerable children in society, a report has found.
The standard of child protection at Blackpool, Cheshire East, Cumbria and Rochdale councils is "unacceptably poor", Ofsted has warned.
The watchdog which inspects children's social care including child protective services, said more needs to be done to address "incompetent and ineffective" leadership in children's services.
It said some managers do not have a "firm understanding" of what constitutes good practice.
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The Duke of Cambridge also laid a wreath to honour the victims before kick-off.
The mother of one of the Manchester attack victims has told of the distressing moment she found her daughter being treated after the attack.
Thousands of people once again gathered to pay tribute to those killed and injured in Monday's attack.