As soon as they are ready, I'll have 5. Can't help too much on the distribution though unless you are looking at London/Home Counties.
Danny, with regards to the credit card idea, you could take this a stage further by organising the PPRuNe loan with one of the banks. Considering the amount of Wannabees that look at this site (me included), if you could set up a marketing arrangement with a bank for loans whereby you advertise and take a commission.
I believe that the Royal Bank of Scotland does such a scheme but I'm no banker