Lawyers for the charity said the guidance could deprive children of the “fundamental support and protection” they need.
It came from the DfE’s innovation unit, which looks at new ways children’s social care can be shaped and improved.
Article 39 director Carolyne Willow said: “It is not good enough for the minister to say there have been no changes to the law and statutory guidance while at the same time leaving in circulation a document which indicates otherwise. Council duties towards vulnerable children cannot exist and not exist at the same time.
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“We are a small charity and taking legal action is inevitably risky financially but we cannot stand by and leave it to vulnerable children to have to go to court to defend the rights that Parliament and successive governments have given them.”
Last year, 50 organisations wrote to the children’s minister Nadhim Zahawi asking for parts of the document to be taken out of circulation, but he refused.
The minister said the guidance serves to “help practitioners provide targeted support for children and families”, and “does not seek to change anything in the current statutory framework for children’s social care”.
Labour’s shadow children’s minister Emma Lewell-Buck MP accused Zahawi of “cutting vulnerable children adrift”.
Today the Local Government Association (LGA) responded, with a spokesperson saying that the Association has “always supported the principle of allowing highly trained, experienced professionals the flexibility to test new approaches within … an extensively regulated environment.”
The spokesperson pointed to the massive deficit in funding for local authorities as a reason for new ways to provide social care to be considered: “With councils facing a £3.1bn funding gap for children’s services by 2025 and overspending their children’s social care budgets by more than £800 million in the last year alone, it is more important than ever that scarce resources are effectively targeted at the areas that will make the biggest difference for children and families.
“But it is important that any questions around the accuracy of elements of this advice are clarified as soon as possible, so that councils and their residents can be confident that any action taken is fully in line with current legislation and guidance.”
They also noted that it is important for Ofsted to monitor new practices as they emerge. The DfE would not comment on the issue but confirmed that it had received the application for judicial review.