caravan as my accommodation

[Terpe]

thanks for the advice i will tell him to rent a flat for us. Im sorry because my fiance didnt know about this things regarding visa...

rhema,
Sorry to say, but UKBA will no longer accept a touring caravan as suitable accommodation.

They will accept 'mobile homes' / 'static caravans'.

I think for the purposes of the settlement visa you will need to rent a small flat or room share in a multiple occupancy house, or even stay with family or friends etc.
At least for a while.