As of March 2018, Cineworld was the leading cinema operator in the UK by box office market share (based on revenue).

[10] Cineworld Glasgow Renfrew Street is the tallest cinema in the world and the busiest, by customer base, in the UK.

[12] The following year, Cineworld acquired the UK and Ireland operations of French cinema company UGC.

[17] The Blackstone Group, which had invested in Cineworld when it was privately owned, sold its entire remaining 20% shareholding in November 2010.

[20] In 2014, Cineworld's Picturehouse chain was subject to industrial action owing to its refusal to pay the London living wage to its staff.

[33] However, Cineworld would terminate the purchase agreement due to alleged "material adverse effect and breaches" by Cineplex.

[34][35] In December 2021, the Ontario Superior Court of Justice ordered Cineworld to pay damages of C$1.23 billion for pulling out of the acquisition of Cineplex.

[37] Some 800 staff at Cineworld Group PLC wrote to chief executive Moshe Greidinger requesting their jobs back after many were made redundant "with immediate effect".

[43][44][45] Later that month, it hired FTI Consulting, Houlihan Lokey, and AlixPartners to help refinance the company's $8 billion debt.

Cineworld credited this to the success of Spider-Man: No Way Home, the only film to have made more than $1.5 billion globally since the pandemic began.

[51] In April 2023, Cineworld's stock price plummeted by 30% due to their plan to discontinue the sale of their business in the UK, US, and Ireland.

It announced that it plans to secure funding of $2.26 billion and that it had entered into an agreement with its creditors to restructure its debt and come up with strategies to exit bankruptcy.

[54] That same day, Cineworld emerged from Chapter 11 bankruptcy after slashing billions of dollars in debt and the much-needed boost from the Barbenheimer box office success.

[55] In July 2024, Cineworld announced it would close six of its cinemas across the UK as part of a restructuring plan to bring the company back into profitability.

[9] Out of 45 cinemas[61] in the world that are fitted with IMAX with Laser projection systems, two are in the UK, both belonging to Cineworld, located in Leicester Square[62] and Sheffield.

Located next to the Cheltenham cinema, The Screening Rooms offers considerably larger, leather seating, premium food, and 'table' service.

[69] In early 2014, Cineworld introduced an allocated seating system, starting as a trial in selected sites including Wembley and rolling out to all their cinemas by the summer.