I have noticed that both of the front fog/DRL’s are badly misted up on the inside. The nearside one is so bad that the water is building up in the lens.

 

I have been unable to find any other comments about this, is the common and does anyone know how to stop this happening??  

Unfortunately they all do that, it even mentions it in the owners hand book, the units have rubber tubes connected to them to allow them to vent, there are loads of references to this on this forum.