London cinema chain Curzon warns customer data including card digits may have been exposed in technical glitch

Curzon cinema has admitted a major app failure that left dozens of customers ' personal details exposed to complete strangers.

The upmarket cinema chain — which runs 10 venues across London plus its Curzon Home Cinema streaming service — said the error meant other users could see people's names, emails, phone numbers, dates of birth, profile photos and membership tiers. In some cases, even the last four digits of saved bank cards were visible.

The company insisted nobody was ever actually logged into someone else's account and that no full card details were shown. All purchases and log-ins "always remained connected to the correct member", it said.

The blunder, caused by a technical configuration error, ran from November 25 to December 2 and hit customers using the iPhone app