smiley
I think you do this the same way you do all the other vouchers with tesco, you have a form in the back of the tesco clubcard deals book, or print out a copy from their website. You enter your name address etc and the longleat code and tell them how many vouchers you are sending in and how much you want back in longleat vouchers. Send this to tesco they will then send you longleat vouchers to hand in at the kiosk when you arrive.