I noticed the other day that I had water running down the internal trim of my NS A pillar. It was coming from about halfway up the trim and seemed to have something trapped under the trim against the windscreen. On removal of the trim I found the thing poking out was in fact window adhesive so not the sunroof drain as I had originally suspected. In fact there was no sign of a sunroof drain and just cabling for (I assume) roof mounted equipment like switches for lighting and sunroof etc. I have never noticed it before and was unaware until today of the car fogging up internally from the damp.
Does anyone have any thoughts on what it could be that's letting water in?
I did have a replacement windscreen fitted when I bought the car back in June 2018 but as stated have never been aware of any ingress up until now.

Click image to enlarge

I've added the issue to the list for my service booked for 7th Feb to see what they find.

Hey WL and thanks for your response.
Having had LR3/4 for 12+ years I assumed the drain would be at the front of the sunroof tray and exiting down the A pillar. You say they possibly exit centrally into the B pillar. I used to use a length of bendy curtain rod which was stiff lengthways but flexible to push down the drains to clear them of any debris. I tried this on my FFRR and couldn't find the drain at all. I was concentrating on the front as before. I'll give it a go but try midways to see if I can find the opening to clear.
Whats strange is the water doesn't run down the A pillar entirely and exits about halfway down. I've pulled the inner trim off to reveal whats behind but couldn't find a drain tube. This lead me to believe it was a screen issue. I'll have a look over the next couple of days and report back.

I just saw a diagram that indicates that the drain line starts where I said (near B Pillar), but that they then travel straight back and actually exit somewhere behind the rear doors, but in front of the wheels. That said, the lines could be broken off like mine or it could be clogged and the water overfills the sunroof assembly and gets in that way. Good
Luck. I hope you don't have as much damage as I did.