Well, I thought I would investigate and share with you all my findings:
Firstly, I wanted to check this area for signs of blockages thinking that water must get trapped here....

So I took out the 3 lowest screws and had a pokey pokey....

What have we here ?.......


And the other side, the same, full of leaves and bits Ewwww.....

I cleaned it all out good and proper and put it all back together. Eager with anticipation of my success I began washing the car as usual, leathered off, the full monty.
I moved the car to a dry bit and awaited the results....................
So now I hear you ask........... Did it work Welly?
Well,
err,
NO


It appears the water just gets stuck in there anyway, it's the bit of arch liner that returns under the body at the bottom, it's just a water trap and that's that!
At least I cleared the leaves out though
