Interestingly, of the Cabinet, Hilary Benn, Ed Miliband, David Miliband, Alan Johnson, John Denham, Jack Straw, Shaun Woodward, Douglas Alexander and Alistair Darling are not available (shame!).
Now, putting aside the rather amusing vanity of the whole thing, the shop states,
You will receive an email with download instructions once payment is cleared. There is a limit of maximum 10 downloads within 7 calendar days after the point of purchase.Alternatively you could just download one and then copy it lots and lots for as long as you like. Will still cost you at least a tenner though. Heaven knows why they've bothered with such an idiotic restriction.