Every morning and it always happens first thing, when i start the car and reverse out the drive and drive off I get the sound of water rushing through the middle of the car, between the front seats. Does anyone else get this or know what it could be? For the rest of the journey the car is fine, but i just get this noise which sounds like a river running through the underside of the car, down the middle. It's strange, it's never done that in the 3 years i've had it.

Any advice, suggestions and help would be very welcome.

KJ