Question Author
Thanks guys. I think the silica gels sound good. Can I get them in Halfords? I've checked round the window seals and the boot rear lights, all seems good there. The cars old now, maybe I need to take it to a garage for a professionals 'eye', cos I cant see any breaks in the seal.
Now I've resolved the window catching the seal, I'm wondering if Maybe its just the residue from that leak.