In this appeals process, you are playing against a stacked deck. UKCPM were never going to accept any appeal. The IAS are this independent:
UKCPM belong to the International Parking Community (IPC) is the trading name of United Trade and Industry Ltd. The IPCs director are Will Hurley and John Davies (John Llewellyn Gladstone Davies). The Independent Appeals Service Ltd (IAS), has the following directors... Will Hurley. Which firm of bottom dwelling solicitors do you think they use for their bulk litigation? Yes, Gladstones, and who do you think the MD of Gladstones is? Yes, John Davies.
If you want to waste your time on a futile IAS appeal, be my guest. However, I would advise waiting out all the useless debt crawler letters that are going to come your way and when they issue a claim, that is when you will win. The debt collectors are powerless and can be safely ignored. Do not ever, ever, communicate with a useless debt collector.
Come back when you receive a Letter of Claim (LoC) and we will advise you through the inevitable strike out or discontinuation.
You have a very strong defence as you cannot be liable as the Keeper because their NtK is not fully compliant with PoFA, 9(2)(b) and 9(2)(e)(i). Also, they are in breach of the PPSCoP sections 3.1.1 and 3.1.3.