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.
According to data from Freedom of Information requests sent by MP Robert Halfon, the most expensive first hour of hospital car parking are at:
- Wye Valley NHS Trust Hereford - £3.50/one hour
- West Suffolk NHS Foundation Trust - £3.30/minimum two hours
- Chelsea and Westminster Hospital NHS Foundation Trust - £3/for one hour
- Royal Free Hospital North London - £3/for one hour
- Mid Essex Hospital Chelmsford - £3/for 15mins to 3 hours
- Aintree University Hospital, Liverpool - £3/for 30mins to 1 1/2 hours
High prices for parking at hospitals may soon be a thing of the past, as MPs gear up to examine the controversial measure.
Despite recent government guidelines in which the Health Secretary vowed to crackdown on hospital parking costs, MPs are claiming some visitors face fees of up to £500 per week.
A campaign lead by the Conservative MP Robert Halfon exposed the varying degree in cost relatives face when visiting sick loved ones.
Mr Halfon launched almost 400 Freedom of Information (FoI) requests and found London had the highest charges, with an average of £20 a day and more than £130 a week.
The lowest charges were in the East Midlands, where parking costs were £3.50 per day and £11 per week.
The Local Government Association claims local councils have been forced to write off millions in unpaid parking fines as they have been unable to trace foreign vehicles.
LGA economy and transport board chairman Peter Box wants a central database introduced to allow the Government to get tougher on people failing to register their vehicle.
He said: "Drivers of foreign-registered vehicles need to realise they are not above the law in this country.
"Reckless and inconsiderate parking by non-UK registered vehicles puts other drivers and pedestrians at risk.
"The millions of pounds worth of fines written off could also be spent filling potholes, providing bus services and tackling the £12 billion repair backlog to bring our roads up to scratch."
See how different parts of the UK measure up:
- Brighton & Hove is owed more than £750,000 in unpaid fines
- Oxfordshire, Southampton and Portsmouth councils are owed £500,000
- Bournemouth council has written off £57,000 in the past 12 months
- Maidstone Council in Kent has lost out on £28,455 worth of tickets
- Leicester City Council has waived £20,000 in fines in the past year
- Milton Keynes in Buckinghamshire is still owed £13,365
- While Doncaster Council in Yorkshire has ripped up £12,000 worth
Millions of pounds worth of unpaid parking fines have to be written off each year by councils unable to trace drivers of foreign vehicles, according to the Local Government Association (LGA).
Some councils have had to rip up thousands of parking tickets with one local authority - Brighton & Hove Council - being owed more than £750,000.
EU laws allows European vehicles to drive on UK roads for six months before having to register with the Driver and Vehicle Licensing Agency (DVLA) but the Government does not keep a record of the estimated three million entering the UK each year.
Currently the DVLA only records information about non-UK-registered vehicles when they are notified through offence reports provided by the police or from tip-offs from the public.
This means foreign vehicles are able to disappear within the system by going unregistered.
The LGA said this left town hall parking bosses facing an impossible task to chase down drivers for payments while laws in other countries mean British drivers parking illegally abroad can be tracked and chased.
Councils charging fees for parking solely to make a profit "is a misconception" as any money generated has to go back into the community, a Local Government Association spokesman told Good Morning Britain.
Any parking charges handed out on the street had to be spent on road and pavement upkeep and money collected in car parks "is used on essential services".
High parking charges and "unfair" fines drive away motorists and "undermine local high streets", a government minister has said.
Communities minister Penny Mordaunt criticised local councils for raising parking prices and urged councils to do more to support their high streets:
Some 22% of drivers have had to start paying for a parking spot that was once free, a survey from a national car insurer has found.
According to the RAC:
- Some 24% said traffic wardens were now more active in their area.
- In addition, 41% of motorists believed that the local authority where they lived used the revenue from parking charges to subsidise other areas of non-motoring expenditure.
- A total 65% of motorists reported even when they finally find a space to park, it was too small for today's breed of cars, many of which are wider than previous generations of vehicle because of the addition of side-impact protection features.
Motorists are feeling the pinch on the cost of parking, with four out of five drivers reporting price hikes in town and cities, the RAC has found.
The car insurer said 67% of the 1,526 drivers it spoke to believed parking was more sparse in their home town or city centre and restrictions had tightened.
Drivers pointed to parking charges pushing up the cost of a trip to town.
The RAC added London motorists, in particular, had "felt the pain" of increased parking costs, with 59% finding high street parking was hitting their pocket more.
RAC technical director David Bizley said: "Councils should be compelled to report where the money raised from parking goes - giving drivers assurance that it is being ploughed back into road and transport improvements, rather than just plugging budget holes elsewhere."
Banning CCTV cameras on cars will stop "greedy" councils using the method as a "cash cow", Communities Secretary Eric Pickles has said.
Nine million parking fines are estimated to be handed out by local councils in England every year, generating £1.3 billion in revenue in 2010, and Mr Pickles believes too many parking tickets were being issued for the "wrong reasons".
"CCTV spy cars can be seen lurking on every street raking in cash for greedy councils and breaking the rules that clearly state that fines should not be used to generate profit for town halls," the MP said.
"Over-zealous parking enforcement and unreasonable stealth fines by post undermine the high street, push up the cost of living and cost local authorities more in the long term.
"Today the Government is taking urgently needed action to ban this clear abuse of CCTV, which should be used to catch criminals, and not as a cash cow."