Pret A Manger, the sandwich bar operator, is to launch a new kiosk concept into high-footfall locations including retail parks, train stations and airports. The company has already targeted locations such King’s Cross, St Pancras and Heathrow’s Terminal 5, which opens in 2008, as possible locations for the new concept. The group will use kitchens at its nearby high street stores to prepare food for the kiosks, which will be 3m by 4m in size.