NSPCC ignores the most vulnerable

I’ve recently been having some child protection training so as that apparently, I can be up to speed re the latest wrinkle of the safeguarding bug. In my most recent training session there was a module on neglect (which according to the NSPCC is the most common reason for children being the subject of a child protection plan)

Now get this, neglect (according to HM Government among others) is defined as:

the persistent failure to meet a child's basic physical and/or psychological needs, likely to result in the serious impairment of the child's health or development.

Furthermore, neglect occurs when:

parents and carers are unable or unwilling to meet a child's needs [and] may occur during pregnancy as a result of maternal substance abuse.

Now can someone help me: if those definitions are true how is it that we permit abortions?