He makes references to what "data" shows, but makes no references to the sources of this data.
According to him, "over 35% of parking charges are issued to repeat offenders". As no source is provided, we have to take him at his word, giving due consideration to the trustworthiness of the IPC and its members of course

- without access to the data behind this stat, it's impossible to deduce much from it.
How many of these "repeat offenders" are actually people who have received multiple unfair charges from the same operator, caused by the shoddy practice of said operator, rather than "non-compliance" on the part of the motorist? Look at all the residential cases, where people end up receiving multiple tickets for parking on land that is demised to them in their leases, for example.
The private parking 'industry' demonstrated they couldn't be trusted with the power to clamp cars, and had that power removed. They have now had since 2012 to prove they can be trusted to manage parking on private land by other means, and have in my view failed to do so. Bring in proper regulation, and reduce the level of charges unless and until there's evidence that the regulation is working and that unethical and unreasonable practices have been significantly reduced by said regulation. Allowing them to issue even larger charges would be rewarding them for years of malpractice.