Local Democracy, Economic Development and Construction Bill [Lords]

I am looking at clauses 3 and 4. Could the Secretary of State explain what business it is of a local authority to "promote" matters to do with the criminal justice system? In clause 3, for example, she requires local authorities to promote independent monitoring boards to do with prisons, courts boards and youth offending teams. Clause 4 states:""A principal local authority has a duty to promote understanding among local people of…the functions of a lay justice"." Surely the separation of powers that her Government seem so keen on would contradict what she has put into these provisions.