I'm having similar problems. I too had a small lake in the footwell, scuttle drains were clear, so I removed the scuttle trim at the base of the windscreen. The sealant had gone at the base of the clips. Thinking that was it, I replaced the clips with plenty of sealant. Next downpour - soaking footwell again! ;) Spent most of Sunday removing various bits of interior trim, getting my wife to spray the windscreen with a hose and me performing contortions to see where it was coming from to no avail. I was getting to the stage of removing the dash, however after tea it started to rain quite heavily, so I had one last go. Removed all the trim from around the passenger quarterlight and there it was! A steady drip from the windscreen bonding right in the bottom corner. I've still to get a chance to go round to Autoglass to see what my options are. My central locking and electric windows are both playing up. I have the later model where the module is at the driver's side so it's not water ingress.C/L activates with the remote but the driver's door sometimes doesn't lock/unlock. Individual doors lock/unlock manually but don't activate the C/L. Both front windows aren't working. Been too busy trying to fix the leak to investigate much but I had a quick look at the loom where it goes through the doors and it seems ok