There is definitely a problem with park and ride near HOP station but do agree with the anti-CPZ comments. Talk of CPZs is just a smokescreen IMO - the Council would love it as it diverts attention from a thornier root issue not in their control: local public transport.
Better transport links, most likely buses in this case, would be a win-win solution. Less park and ride, less pollution, less traffic congestion and better access to local shops.