This was the one common problem I thought I didn't have but recently noticed the rear window steaming up quite frequently.

Spare wheel well is full of water!

Rear side panels look ok but on investigation of the boot seal it's quite baggy so I'm guessing this is the issue.

Anyone got one for sale before I'm forced to order a new one at £90+?

I had this problem on my old SC. Tailgate seal cured it and I never had a drop of water in it afterwards.

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2007 Range Rover Supercharged in Java Black with Ivory Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior

Thanks. It's either the boot seal or the tow bar / bumper mounts as luckily the water is only in the wheel well and doesn't appear to be any higher.

Boot seal seems to be the logical place to start especially as it's in such poor condition.

just replaced my boot seal with a brand new one £96 from range rover dealers at trade or duckworth dan on here i had the same problems as you