MPs: The missing information
Now the Commons has released the official data on MPs' expenses, much of the focus will actually be on what they still haven't released - the information which has been blacked out or "redacted".
While this event may be the culmination of the official process started by FOI requests made over four years ago in January
2009 2005, it's unlikely that FOI campaigners will be satisfied by today's disclosures. They are more likely to complain about the redactions.
Since the Telegraph has the full set of leaked data, it is best placed to draw attention to the discrepancies. It will doubtless do so.
Yet it's already clear from information that the BBC possesses that some of the redactions seem peculiar and go beyond security considerations such as home addresses and signatures.
For example, in today's material about Gordon Brown's expenses, the Commons has redacted the fact that some bills were for Sky Television.
How do I know this? Not because of a leak - but because fuller details of his expense returns have already been officially released by the Commons in response to another FOI request in May last year.