for every £25 top up you get £1 voucher code off your next consignment...i have top up £100 in the past 6 weeks, i had my 1st voucher sent to me, had to chase my second and still chasing my 3rd and 4th and its been nearly 4 weeks and i still have not had them! i keep contacting and all i get is a case number has been added to your account but yet still no vouchers!!! im getting really annoyed as i send a few parcels and may start using elsewhere as i don not have time to be chasing whats rightfully mine! apart from this they have delivered all my parcels up to date (20 plus) contact is slow ans they really need to sort out customer service contacts and replies