In an interview with Daybreak earlier, Sally Roberts insisted cancer treatment doctors are proposing will cause her son Neon long-term damage and despite a growing public backlash is still pushing ahead for alternative options.
ITV News reporter Sejal Karia examines the ongoing legal battle:
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The 25-year-old died in hospital shortly before 6pm on Saturday.
The crash happened on the southbound carriageway on Sunday.
Colder further north with hazardous, wintry conditions