We will encourage reporters to be as specific as possible about the source of any anonymous quotation. - Alan Rusbridger

In the days when we could take it for granted that journalism mattered, we could only share assumptions about what it was, how it was delivered and funded, but this is not the case any more.

We're no longer a once-a-day text medium for a predominantly domestic audience. Increasingly - around the clock - we use a combination of media in telling stories, and in commentary, to millions of users around the globe.

All journalism is investigative to a greater or lesser extent, but investigative journalism – though it is a bit of a tautology – is that because it requires more, it's where the investigative element is more pronounced.