Sailor Sam- Thanks!! BTW It has "Parking Charge Notice" and a PCN number along the top so I guess it IS a PCN? Does this affect how I should proceed? Esmerobbo- I have contacted the retailer and done as you suggested, thanks so much!!

Recently got a PCN - a stereo was being fitted by a chain store (free car park is for this and several other shops) and I left the car with them to fit it. When I got the PCN for being in the car park for over 2 hours I appealed- was I wrong to do this? By appealing/acknowledging/admitting I was there does this now mean that I will legally have to pay?