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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Accompanied by the Duke of Edinburgh, the Queen will attend the opening ceremony of the fifth session in the Holyrood chamber.
Ms Leadsom has received the backing of Ian Duncan Smith, the former work and pensions secretary.
The former shadow work and pensions secretary is considered a more viable candidate than Angela Eagle, a Labour source has told ITV News.