[Lee S]

Yeah.. I have googled leaking boots and rear screens and some of the causes are mental. One guy had a hairline fracture in some sealant under the plastic cover of the roof seam/channel right at the back and water was getting in there. Another guy found it was getting in around the wiring grommet. Another had a leak around the hinge bracket (hatchback though). It goes on and on. It could be getting in from anywhere. Might be hard to track down.

I'm definitely going to start with a new boot seal, clear out the drain pipes all round and sort out the rear lights. The reversing light lens on the inner drivers side rear light is really full now. Something not right there.

I keep thinking that it's a bit too much moisture to be just from breath or damp from feet etc. and I cant help but wonder why it condenses just in that corner. It's warm moist air condensing on cold glass. Either the glass is colder there than anywhere else (leak in seal) or there is moisture getting in and running down but the headlining and c pillar covers are all bone dry as is the parcel shelf.

Back to the drawing board for now but watch this space.