Cost of Solar

Haha - snap bikeralw - we must've been doing the same calc simultaneously

Oops, we're off topic again - we'll get our knuckles rapped 

Thanks; interesting.

(I won't concern myself any further about keeping the fridge on while driving)

Assuming you take a small percentage from the battery each night - less than 25% - then an hours drive would more than put that back. Its only worth having a solar panel if you are not moving for 2 or three nights.
My previous van was used for family holidays and would sometimes not move for 4 or 5 days. With an 80 watt panel I found that good sunshine had topped the battery up again shortly after breakfast (04:00 to 09:00 - 5 hours) after an evenings use of lights and TV. Obviously tighter in winter, but then I usually had hook up to power the oil filled radiator. 
In my current van (Symbol) I use a 20w panel when parked on the drive to keep batteries topped up when I'm not going anywhere, but don't need to bother otherwise as we tend to drive everyday when we're using it now.
It all hinges on whether you will drive every day.

Some great information which now tells me I need a solar panel only to make me feel better 

My choice of fitter was Eddie at Vanbitz but he is on holiday anyway so gives me more time to decide if I do get one fitted or not. 

Thanks all !