The Transparency code for smaller authorities states (I've just listed the relevant parts) I'm not sure what applies if you're not a smaller authority.
“Part 2: Information which should be published
10. Smaller authorities should publish:
g. Minutes, agendas and meeting papers of formal meetings (see paragraphs 29 and 30).
Minutes, agendas and papers of formal meetings
30. Smaller authorities should also publish meeting agendas, which are as full and informative as possible, and associated meeting papers not later than three clear days before the meeting to which they relate is taking place.
Part 3: Method of publication
32. The data and information specified in this Code must be published on a website which is publicly accessible free of charge. For example, one way that this requirement could be achieved could be by publishing the data on the smaller authority’s website or that of the billing authority in its area (district or London borough or unitary council).”
The complete Transparency Code can be found here