We are doing a trip from the North West to Devon next week, but a bit worried about where to park when we pull into Motorway services.We noticed when solo (without van) that there isn't parking sign posted for caravans. Do we follow the signs for HGV's and the spaces hopefully wil be there for Carvans.Have read in magazines that HGV's park in Caravan spaces and vice a versa....Don't want to start World War 3 !