I had my drivers door replaced back in October, and I think it's no coincidence that I've now got this water leak. 
On searching the forum it sounds like a fair few others have had the same issue and it's either coming in through a seam in the bulkhead or due to a dodgy door seal. Seeing as mine has recently been replaced, and I've not noticed it before, I'd say mine is due to the door.
My question is...
Is there a way to see that it's definitely the door seal at fault? I couldn't see any sign of leakage around the visible door/cabin seal, so how does it get from the door to the footwell?
I just want to confirm before I go about ripping my door apart!

On searching the forum it sounds like a fair few others have had the same issue and it's either coming in through a seam in the bulkhead or due to a dodgy door seal. Seeing as mine has recently been replaced, and I've not noticed it before, I'd say mine is due to the door.
My question is...
Is there a way to see that it's definitely the door seal at fault? I couldn't see any sign of leakage around the visible door/cabin seal, so how does it get from the door to the footwell?
I just want to confirm before I go about ripping my door apart!