<P> The company emphasises the use of natural ingredients and advertises that its sandwiches are made on the day of purchase in a kitchen at each location (with the stated exception of a few small outlets). Food left unsold at the end of the day is collected by charities . Sandwiches are packaged in paperboard rather than sealed plastic . 67% of its trade is in London, where around three - quarters of its stores are located . Locations include: </P> <Ul> <Li> United Kingdom </Li> <Li> Boston, Massachusetts: 6 outlets, as of April 2016 . Two stores opened in December 2012, in the Back Bay and Financial District . In June 2014, Pret opened its largest American location in Boston's Downtown Crossing neighborhood . This location stands at 5,335 square feet and can seat 100 people . </Li> <Li> Chicago </Li> <Li> Dubai: 1 outlet, as of March 2016 . The first outlet in Dubai opened on 16 March 2016 at Dubai International Airport's new Concourse D . </Li> <Li> Newark, Delaware </Li> <Li> New York City </Li> <Li> Philadelphia </Li> <Li> New Jersey </Li> <Li> Washington, D.C. </Li> <Li> Hong Kong </Li> <Li> China </Li> <Li> Singapore </Li> <Li> France </Li> <Li> Netherlands </Li> <Li> Denmark: 1 at Copenhagen Airport in Terminal 3 </Li> </Ul> <Li> Boston, Massachusetts: 6 outlets, as of April 2016 . Two stores opened in December 2012, in the Back Bay and Financial District . In June 2014, Pret opened its largest American location in Boston's Downtown Crossing neighborhood . This location stands at 5,335 square feet and can seat 100 people . </Li> <Li> Dubai: 1 outlet, as of March 2016 . The first outlet in Dubai opened on 16 March 2016 at Dubai International Airport's new Concourse D . </Li>

How many prets are there in the uk