Hi, i bought some frisps multipack crisps today 21/12/2012 from Farmfoods in Blackburn, i opened the multipack when i got home, i was about to open a packet of salt an vinegar crisps at that point i noticed there was nothing in the bag but pure air and it was fully sealed we still have the the empty crisp packet for proof if you need it. please get back to me when you can.