Give "How to Complain Effectively" courses or factsheets or have someone working in P11 to do people's complaining for/with them, i.e. you come to them with the issue and details, they draw up the complaint and it gets sent to the relevant company.
Radio ads to generate more interest/awareness of the group, especially at commuter times, like 7-9am and 5-7pm.
and do a professional photo shoot with the committee