Maria Eagle (Parliamentary Under-Secretary, Department for Education and Skills) replied 

This is essentially a matter for the National Society for the Prevention of Cruelty to Children (NSPCC). Training requirements for staff are subject to "in house" arrangements at the NSPCC and would not fall under the jurisdiction of the DfES. However, there is an expectation that the NSPCC, along with other organisations involved in child protection would follow Government guidance such as "Working Together To Safeguard Children" (1999) and "Complex Child Abuse Investigations: Inter-Agency Issues" (2002). Local authorities purchasing work from the NSPCC would also need to quality assure that work.

Acknowledgement
Hansard reference