Car park chargeplans in Bushy and Richmond parks have sparked a furious backlash against The Royal Parks Agency.
Twickenham MP Vince Cable and representatives of the Friends of Bushy Park are trying to arrange a meeting with Mark Camley as soon as possible after the consultation was announced last week.
Dr Cable said: "I am getting strong representations from the local community. The issue is not the charges per se, though some people feel strongly about the principle. It is more the 'hassle factor', being unable to relax while out on a walk because of the fear of wardens, and the practical problem of organising the correct change when their are no shops nearby.
"I am worried too, that the economics haven't been thought through. The Royal Parks aren't going to make much money from a smallish car park in an isolated park with a dedicated parking staff and low charges. They will be tempted to jack up the charges substantially once they have got the system set up."
The RPA said the fees would encourage visitors to the parks by bicycle, foot or public transport and ensure a reasonable turnover of car parking spaces. The rates would also discourage people from parking in nearby streets.
But Zac Goldsmith, Conservative parliamentary candidate for Richmond Park and North Kingston, said: "Like all Royal Parks, Richmond Park costs a lot of money to maintain. Since the Government withdrew funding, they have been struggling to raise the money they need.
"But charging people for using car parks is not the answer, and not particularly during a recession."
Instead he suggested the introduction of large collection boxes near each of the park gates and in each of the car parks.
Ron Mumford, from Surbiton, wrote in one furious missive: "You can bet your life that within months, if not weeks, they will find that the administration costs far exceed the revenue so that charges will increase and continue to increase."