@dj.esco here you go:
Dear London Borough of Hounslow,
I parked my vehicle in accordance with the terms and conditions I was notified of by the tariff board located within the car park. The tariff board makes no mention of any permit-related contraventions, the only circumstances where a penalty charge may be served in this car park are where a motorist fails to display a valid parking ticket or disabled badge, fails to park wholly within a bay, or uses a parking ticket that has already been used by some other person in some other vehicle.
As I did none of these things, the contravention did not occur. If the council wishes to introduce permit restrictions in this car park, the tariff board needs to be updated so that motorists will be alerted to the need to check that they are not parking in a permit space.
Yours faithfully
Send this via the council website and don't forget to keep a screenshot of the confirmation page.
Here you go:
Dear London Borough of Hounslow,
I challenge liability for PCN NJ39134201 on the ground that the alleged contravention did not occur. The allegation on the PCN is "Parked without a valid virtual permit or clearly displaying a valid physical permit where required", but at the material time I had obtained a valid permit to park via the PayByPhone system, I attach a copy of my parking session receipt showing that parking was paid for from 11:01 am to 12:01 pm.
It thus appears the PCN must have been issued owing to a mistake on the part of the CEO, I trust this will be fed back to prevent a reoccurance.
Yours faithfully,
Send it online and keep a screenshot of the confirmation page.