Cineworld is the world’s second largest cinema chain and largest in Europe, with 9,518 screens across 790 sites in 11 countries: the UK, the US, Canada, Ireland, Poland, Romania, Israel, Hungary, Czechia, Bulgaria and Slovakia. It was founded in 1995.

The group’s primary brands are Regal (in the US), Cineworld and Picturehouse (in the UK & Ireland), Cinema City (throughout Europe) and Yes Planet (in Israel).

As of March 2018, Cineworld was the leading cinema operator in the UK by box office market share (based on revenue), with 99 cinemas and over 1,017 screens.

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 located at Valley Centertainment in Sheffield, which has 20. 

According to en.wikipedia