Eastenders
Around the time of the child abuse storyline between Tony and Whitney theres was a lot about the failiure of the child protection agencies. Many children were found to have been abused by parents or other adults. The story really shows how Eastenders tries hard to portray stories that would have been in the publics focus at the time of airing. The story may well have been used to help show to society what some people are like and how child abuse can happen even without the noticing of another parent in the household and how easily it can occur. It also showed how the child may not even know that they are being abused by the adult and that they need protection from the NSPCC and such authorities.
However, the story about Chelsea's cocaine addiction is quite clearly not taken from the news headlines. There were no big stories about drug addiction in the press in the months prior to the storyline and nor were there any whilst the story was happening. This sort of story does show the troubles that occur in real life but did not have the link to showing stories that were in the public eye.