I will definitely be fighting it! There's no way I'll pay it. The reason I got the fine is because the car park management is outsourced to another company, and they've just switched to an automated system which identifies the registration number of the cars when entering and leaving. Whilst I have a little permit sticker on my windscreen - which has been fine for the past 2 years - the system doesn't see it. Needless to say I'll be going in to speak to someone today... And walking.