It must be remembered that a lot of these private parking companies are just former cowboy clampers in a suit and tie.
I've never wavered in my opinion of private parking companies. Scum of the earth.
Yes..............and No !
The basic problem is that for every "cowboy clamper" there is, there are thousands of "cowboy parkers". The current law is a mess because successive governments have tried to solve the parking problem with a one Law covers it all approach- it doesn't !! I live in an apartment block, we have 2 car parks and a Private approach road. All of these are fair game for a cowboys looking to park somewhere for free. The only legal solution we have is to employ a parking company. Some of which are undoubtedly run by get-rich- quick merchants.
If you own a house with front on-site parking there is nothing you can do to stop other people parking there - other than a gate, a chain or some other physical barrier. If they are already there, you are powerless until they drive away.
If we (where I live) were allowed to clamp people parking on our property, the problem could be solved almost over night. No money involved - just clamp them and greatly inconvenience the parking cowboy. The message would soon get home when people realise that the property owner can use clamps - or similar.
Of course the problem is not helped by local Councils continually reducing the roadside parking times and upping car park fees - and then outsource the parking control to a bunch of potential cowboys ...........but I won't do down that rabbit hole.