>Then there's the phrase we really trashed them or what a trashing after beating someone handily at sports.
And, of course, there's also the inebriated trashed...I'm really trashed.

I think that we would use some of these phrases too. "The kids trashed the room". People seem to speak garbage but are trash (trailer trash for example).

We don't really have trailer parks to the same degree (too cold and wet probably), only caravan sites for (mainly) summer use, although there are "Park Homes" which seem to be http://www.cso-parkhomes.co.uk/ sold largely to people who are retiring.