There is "plenty" of guidance for hospitals on how they should run their car parks so patients' relatives are "not ripped off", a former member of the NHS Foundation Trust said.
Roy Lilley told Good Morning Britain hospitals would "have to charge" to pay for the wear and tear of the car park, but they should keep their prices reasonable.
More top news
A man shot dead by police after allegedly threatening people with a gun in a block of flats in Enfield has been identified.
Nigel Farage said Ukip's campaign would be separate from two existing No campaigns ahead of the 2017 referendum.
Murder charges against an Irish nanny, who spent more than two years in prison accused of killing a baby in the USA, have been dropped.