You may want to check forums like Pepipoo. There is a post from a couple of years ago by someone unhappy about Midway Car Parks:

tinyurl.com/6cznob3

And another, more recent, one:

tinyurl.com/63w7v2g

There is some more stuff on www.consumeractiongroup.co.uk, though it won't cheer you up. People have won CCJs against the company, but have still failed to recover their losses.

Various other websites carry complaints.

I understand there is a Facebook group too.