The asa are a group of people that look at complaints that people have said about different adverts. the way they work is that if they get a complaint they take this and have a look at the advert and if they think that its not acceptable they will contact the company that owns the advert and then see if they can change it, if they cant then they collect complaints and then tghey can bann the advert. they look at tv adverts, radio adverts, magazines, billboards and busses. they set up a series of codes like programmes and advertising and children and harm and offence.