could be a crack around the heater matrix caused by the freezing weather. this can be caused from not adding anti-freeze to your coolant.
I think I have a leak there too. I've dried out the carpet now but since the rain has been back for the last week or so, I've put down some blue paper towels to soak up the rain. (keep changing it as it's been raining almost every day here).GhiaXNorwich said:Well the hole where water was getting in has now been sealed with silicone sealant. It was in the area to the right of the ECU and access was made easier by removing the alarm module and the relay panel. Some removal of the sound proofing was also required. Even then - access is very very tight.
Have a look upwards towards the inside of the wheel arch/wing with a torch and you may see a black residue where the water is coming in - thats what I had and hopefully problem is now solved. Was probably about 6 - 8" from where the alarm module mounts.