The very term 'leaks' rather implies an unplanned accidental and unwanted process.. Yet it's meaning seems to have been shifted so that it means something completely different and planned. God know which is closer to the truth, and how consistently.

I think it is more plausible to assume the British tabloids operate largely on the basis of speculation, gossip and just making things up rather than of carefully checked journalistic research. Harry's accusations seem to be based on an assumption that the gutter press is a lot more professional than is often the case, and that when they print something they are passing on stories that they have been given.