I have to disagree with that statement (tongue in cheek, mind). People do do not have to keep their caravan somewhere, in fact they do not have to keep a caravan. They want to keep a caravan, so therefore they must want to keep it in their front garden. I can accept that people might have to have a car, so I won't argue about that.
Some modern estates have covenants banning the parking of commercial vehicles, which is what probably gave rise to the objection about a Transit van.
A house near to me has a caravan on the front lawn and one on the drive. Until recently they had an overhead power cable to one of them and a tv aerial on a 10ft pole in the middle of lawn.
If all houses were the same then estates would look like shanty towns.
This gives us two issues - 1. it is unsightly and regardless of where i am in my house all i can see out the front is this caravan and 2. when maneuvering on and off of the drive it is impossible to see what is coming. Both myself, my neighbour and the muppet who owns the caravan have all nearly had accidents because there is absolutely zero visibility. This is further compounded by the fact that it is a children friendly road and during weekends and nice weather there are often many children out playing.
I hope that the £200 per year he has saved by not keeping it in storage will satisfy him when a child is knocked down!
As for Nigels comment -"you want to force him to move it" yes, i think neighbours should be entitled to force it to be moved if it can be proven to detract from the property they purchased or cause a danger.
If people want caravans, that is their problem, but just like you can get people evicted for loud noise, why cant you get them moved for visual noise?!?!?
I would be interested to see if anyone has successfully had their neighbour move a caravan?
Perhaps a Leylandii hedge on your land would hide the caravan for you
Poster 1 - tough luck. There are worse things than caravans to have to look at.
Poster 2 - Write to the neighbour requiring him to remove it immediately, and if he doesn't then move it yourself and then put some low posts in to mark the boundary.