aerial photograph of the Nestlé Chocolate Factory in York England UK. One of the largest confectionary factories in the world the site was originally run by Rowntree's until their takeover by Nestle. The site is home to Nestlé's global research centre for confectionery. Products produced here include Aero, milky bars, Kitkats, Yorkie bars and polo mints. The older building is no longer used for confectionary production and is about to be redeveloped as apartments under the name of the Cocoa Works.