When a carer is not supported it has a "knock on effect" on the patient, warned the chief executive of Macmillan Cancer Support.
Ciarán Devane wanted to see the duty placed on local authorities to identify carers in the care bill extended to the NHS as well.
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The Late Late Show host also allowed the singer to take the wheel in a Carpool Karaoke first.
The lender, which is the worst affected by the PPI mis-selling scandal, said it has also set aside £150m for other conduct issues.
Vodafone has been fined £4.6 million by the industry regulator for "serious and sustained" breaches of consumer protection rules.