I find it interesting that some people want to look at each incident in isolation rather than looking at the organisation as a whole.
The police have a track record of this stuff, and a lot of other wrongdoing. It is no bad thing to ask whether there are problems within the institution as a whole. Whenever these things happen the "a few bad apples" argument comes out. Like with Stephen Lawrence, the struggle for all of those years that they had to find out the truth of what had happened, and in the end the police (after years) was announced "institutionally racist".
Here we have a situation where as lipslave points out nicely, something has definitely gone wrong. We know that there were relationships between the police and the press, with money changing hands. Here the press have been told the wrong thing. Is it too much to wonder, given the background, what has happened here?