Watch out, you need to get to @08:55 before Zac gets beyond the rants, and starts answering the questions!
More detail at Channel 4 News website.
The invoices and returns are here.
The invoice I found most fascinating was for 100 large “Zac Goldsmith” boards costing £1388.85, ordered 12/4/2010 and invoiced 19/4/2010. Only £121.45 of this was charged [...]