Machel - from Martin Lewis's site. Bascially looks like if you dispute it, they need to make a court case out of it... which is probably not worth their while?
DO remember this is about fighting UNFAIR tickets
Of course, landowners have a right to charge for and police proper parking. If you've broken those rules, and you think the ticket isn't exorbitant, pay up.
If you DO think it's exorbitant, one route is to simply pay what you think is right, eg, the equivalent to what you'd be charged on a public road.
Private parking company rules can be in place for safety, and hopefully should benefit everyone parking there. Yet mistakes happen, whether it's an unclear sign, technology faults, overzealous attendants or just an honest error. The aim of this guide is to prevent you being out of pocket when most reasonable people would think the ticket is unfair.
If you've blocked the car park's exit or left your car there for a month without paying, sorry - there's no sympathy here and this guide isn't intended to help. Even if it did, you'd have little chance of success.
Yet many unscrupulous firms try to catch people out for profit. Sometimes tickets are calledParking Charge Notices to mimic official council Penalty Charge Notices, but don't be fooled, they're just invoices, NOT fines.
So if they slap a ticket on your windscreen and you think it's unfair, write back explaining why and that you won't pay. The companies may huff and puff, but they can't 'hit your credit record' or 'send baliffs round', they can only enforce it by taking the time and expense of court action.
If you've had a ticket you believe is unjust, don't worry, you can fight it.