Managerial and Professional Officers (MPO) was a trade union representing senior staff working for local authorities in the United Kingdom. The union originated as the Federation of Professional Officers' Associations, a loose body founded in 1975. It brought together various small staff associations in order that they could more effectively take part in the Professional and Technical A Whitley Council negotiations on pay and conditions. While most local authority staff were represented by the National and Local Government Officers' Association (NALGO), the federation believed that NALGO did not represent the interests of senior staff, and that because many such staff managed workers who were members of NALGO, a conflict of interest would arise unless the senior staff had separate represen