CP government quango IDea blocks Freedom of Information

Ernest Opuni emails Sara Clarkson Common Purpose for advice following his receipt of FOI request for information regarding his participation on CP's South Yorkshire Advisory Group. NB in the original email he forwards the name and address details of the person requesting the information - a breach of Data Protection. Why do public servants and quangos have to seek the guidance of CP in releasing information to the public? What have they got to hide?