I think what Kevin has said is right, that public opinion and public attitudes probably are very important in actually getting the process going. However, I think political leadership is very important in terms of sustaining the progress that's made.
The third thing I'd say is that there needs to be a strong focus on building the capacity of the various actors that you need to mobilize, because in tackling a lot of the issues, sometimes it's a case that people, first, aren't aware of the issues, and second, just don't know what to do about them once that's happened.
So a lot of Combat Poverty's work would be focused on building the capacity of people who are experiencing poverty to contribute to the policy-making process, and then, on the other hand, working with government departments to support them in making necessary changes.