I took a litre bottle of water and poured it down the left side rear drain catching the water in a tray in front of the rear wheel.When i poured the water back into the bottle it filled the bottle.I then poured the litre into the right rear drain this time when i poured it back into the bottle half a litre was missing, presumably this has leaked into the area at the rear of the drivers seat and will end up seeping into the carpet again. I will get it fixed in the next couple of days.
Many Thanks to Everyone who gave me advice , this forum is tops
Thanks again .