Hi all
So finally got round to looking at my water leak and you were right!
The problem was from the rear vent, the seal was completely broken.
The other side was completely dry under the vent but the water was very visible on this one
Tried ringing nissan but they are closed!
Also because the vent was Renault I rang them but from the part number they said it was a boot plug... Which I wasn't confident in telling them to order.
I also messaged the recommended member - Zmanalex
So hopefully I will be able to source a replacement soon.
Feel so relieved to have found the problem, couldn't have done it without the help of all you!
Thanks again