Well it appears that the wet rear footwell was due to the n/s/r drain pipe coming off the sunroof, so that one is sorted.
Under the carpet in the drivers footwell I found a newspaper dated 1990 so I'm guessing the leak may have been a recurring problem

Also discovered the drivers glovebox was full of water (luckily I had nothing in there). Looks like is is coming through the bottom of the windscreen, so will have to get some sealant at the weekend.
The joys of SD1 ownership, eh?
