Further to my other post-while standing at customer services saw a woman with a child in her trolley stop at the sandwich section,grab a packet,open & eat it then walk off. I pointed this out to the manager who simply said "yes I expect the empty packet will go on a shelf somewhere". She also said that this happens all the time and she is always finding apple cores or banana skins where shoppers have just picked up food and eaten it as they go around the store. Tesco have loads of signs warning that they prosecute shoplifters but it's obviously o.k to eat the evidence as you go along!