Free Traffic Legal Advice

Hi All, looking for some help contesting a parking PCN from Smart Parking. I Received this letter today 09th July - the contravention apparently took place on 31 May and this is the first letter I have received. They are stating that the driver overstayed and also that they attached the PCN to the Vehicle itself and that the 28 period for payment is already up. I was not the driver. Could you advise how best to contest this? Pictures attached - Thank you!

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