Don't bank on it. Although I've only heard of the numberplate thing in connection with Sainsbury so far, ECP do for a good number of stores & centre owners.
We had bother with them here at a centre with them ticketing student cars, despite it also being the parking for a nearby college. Council (then owners) & just about everybody else involved more or less disowned ECP & their methods.
I wote on this a while ago - they tried to get me at Lidl twice and I did a bit of research - its 99.99999999999999999999999% unenforceable & even if it did go to county court, they could only possibly get loss repaid -i.e the cost of you being in a paid space overlong - which isnt an issue at Sainsbos with free parking - there is no provision under a civil action for a punitive award ( a fine)
they are just the latest morph of the clampers of old, but use vaguely official looking letters that mimik a formal PCO to spook people into paying - even their letters - invoices disguised as penalties are probabaly sufficient enough for any county court to not get involved
I know people who have paid up sadly- what a fearful nation we have become
PS -I am not one of those anothetr tax on the motorist lot either- If I gert caught on the street and im in the wrong, I hold my hands up and pay.
