Bizjetbus
That is the correct email address, but you have to fill in (very carefully, having read the accompanying instructions) their pdf application form. They also want a passport photo attached in, I think, jpg format. There is a link, which they send you, to a geocities webpage, from where you can download their form. I don't have it any more, sorry. It might be worth asking them on that email address if they wouldn't mind sending you the link, but I don't know if they'll reply. Maybe phone them up and ask for the link to the form?
The form is quite ambiguous in the section relating to referees and previous employment, I guess I got it wrong, because I heard nothing more from them having been invited to apply. Their loss, you have to enter into an agreement to repay a loan covering the cost of your rating, over 5 years. I can't remember the monthly sum but it was somewhere in the region of £150 to £200, so I wasn't really bothered when I didn't hear back. Got enough debt as it is!