Cineworld Group plc is the second largest cinema operator in Europe with 2000 screens in 9 countries. The UK operations consist of arthouse chain Picturehouse Cinemas and multiplex chain Cineworld Cinemas with 24 and 82 cinemas respectively. All but two Cineworld sites are located in the UK, with one each in Ireland and Jersey. Cineworld is the second-largest cinema operator in the UK with over 800 screens, and the owner of the single largest multiplex by screens and customer base in Ireland. Cineworld Glasgow Renfrew Street is the tallest cinema in the world and the busiest, by customer base, in the UK. The Cineworld site with the greatest number of screens is that located at Valley Centertainment in Sheffield, which has 20. It is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index.