What legal grounds are you relying on for this proposed class action, beyond your personal feelings being hurt? For example, if the claim were that Motability, a scheme dedicated to supporting disabled people, does not allow a prospective customer to test a vehicle fitted with a left-foot accelerator for right-leg amputees, like myself, I would be inclined to support it and even contribute financially, as that could amount to clear discrimination under the Equality Act 2010.
Maybe you should be directing your questions to the paper in the link.
It is not up to Joe to answer your grievances.
Ask the paper.