Tracy Doherty, 60, used her 2000 Renault Megane Sport Alize (pictured) to drive from her home in Bexley, south east London to visit and care for her 80-year-old mother Elizabeth Henry in Woolwich.
A couple was threatened with bailiffs over nearly £1,000 in unpaid Ulez and Lez charges which they were not allowed to appeal - even though TfL said their cars meet emissions standards.