What is the difference between a consumer based media regulation system and a citizen based regulation system?

The difference is that a consumer based media regulation system is giving people what they want and a citizen based regulation system is thinking about what would be better for culture and society. Example the BBC- license fee. Consumers might not what to pay if they are not interested in what is playing.

What impact did the 2003 Communications Act have on media regulation?

It promoted independent television production by requiring the BBC and Channel 4 to commission more content from smaller production companies. It was to help UK television industry which they did not achieve. It introduced Off com and they made more commercial programs such as detective and crime programs. The 2003 communications act did not have a positive effect on the media regulation

What is the drawback of a Self-Regulated System?

The drawbacks are it is not a successful factor, it lacks sufficient strict and dissuasive measures. Accordingly, the many problems and challenges in the practice of media self-regulation, in general, and press councils. It is often have to face severe criticism is obviously not new.