Bite Card

This is a discount card for food and drink shops in certain stations. See http://www.bitecard.co.uk/. The application form asks for a promotion code. I'm not sure of the relevance of this but http://www.senior-railcard.co.uk/special_offers.htm, http://www.family-railcard.co.uk/special_offers_1.htm and http://www.youngpersons-railcard.co.uk/special_offers.htm give examples.