Uber says 2.7 million in UK were affected by security breach

London mayor Sadiq Khan says ride-hailing service must take action after 'catastrophic' incident

Uber has admitted that 2.7 million people in the UK were affected by a 2016 security breach that compromised customers' information, including names, email addresses and mobile phone numbers.

The ride-hailing company had previously disclosed that 57 million people worldwide were affected by a breach that it covered up for more than a year.