By 'child protection' services do you mean children being removed from parents by social workers?

The child protection services under threat include social work to identify where a child is suffering or likely to suffer a significant level of harm at home, and should be placed in residential or foster care.

But local children's social care includes many other services, such as - 

• Social work to help families overcome problems and stay together
• Support for young carers looking after a relative
• Essential help for children with special needs or disabilities and their families
• Making sure lone refugee children in the area receive care and accommodation
• Providing sufficient, good quality residential and foster care placements 
• Making sure children in residential or foster care have regular reviews of their placement, independent advocacy and mechanisms to have their views taken into account

There are several other agencies involved in protecting children, for example the police and health services, and whilst their funding is separate and not directly affected by the withdrawal of central government's formula grant to councils, the work itself is extremely interdependent and where local authorities struggle to fulfill their child protection duties, the effectiveness of the other agencies will be diminished too.