Darren,
It's a nice clean template but you need to pad the content a bit, try to make it more interesting. Maybe you could add a few more vans for free to get it going. Look in your local paper or something for people advertising theirs and invite them to join.
The details on the vans you do have has spelling mistakes and doesn't make sense in places:
Size of caravan: 3
Smokers: 5
Pets: 113x34
??
So that needs sorting out.
A good start but you need to build on it to get some traffic going.
Admin