the alternative is sullivan way its signposted from the McDonalds roundabout turn right then first left its marked as coach parking

At present, they can clamp you. You'd have to sort the legality out afterwards, most likely by you making a claim against them in the small claims court (if you could trace them).

Sounds to me like scumbags trying to rip people off

We parked in the retail park by Burger King and came back to the car after the Salford game to find a ticket on the windscreen.
Noticing that they weren't on any other cars I asked a bobby I saw whether it was a dodgy one. She said it wasn't, even though the parking was allowed (an even encouraged by the authorities) for the Widnes game, the retail park had changed their policy and were now ticketing cars who they were sure were only there for the rugby.

It was my buddy's company car and his reaction was that he's just not going to pay it.

Friday night parking isn't going to inhibit the retail park in anyway, they've just got the sniff of some extra cash. I reckon next time I'll just grab some dog food from Pets at Home when I get there to validate my parking, since it seems the most convenient place to park.

I recommend he goes on moneysavingexpert and search on UKCPS. His initial reaction of not paying it is spot on.

Most simply use bully tactics in an effort to make you pay. They'll send lots of official looking threats of going to court too