Staff are handing over sandwiches from behind a theft-proof counter as the high street fights backGreggs has axed self-service display cabinets in bakery stores that have been most severely hit by shoplifters.The move is the latest aimed at combating a problem plaguing the high street. Last year official figures revealed annual shoplifting offences in England and Wales had passed half a million offences for the first time, and since then many retailers have reported high levels of crime in their