Over 1.6 million penalty charge notices (PCNs) were issued in the last financial year, according to TfL’s own data. London drivers are issued ULEZ penalty notices every 19 seconds, latest data reveals - Over 1.6 million penalty charge notices (PCNs) were issued in the last financial year, according to TfL’s own. Transport for London bailiffs are chasing a driver for a stranger’s unpaid Ulez fines, they have fumed.