2010 A5 Convertible Leak

[dgerrard612]

I have a 2010 A5 Cab that I've owned for about 6 months. It's terrible at letting the rain in! In heavy rain the footballs, particularly on the drivers side although some on the passenger side too, fill with water until the carpets are soaking. It seems to be from the top right corner of the roof where the windscreen meets the roof and the drivers window, I'll get drips from here as I'm driving. Does anyone have any idea where to start? Has anyone had this issue before and do you have a fix for it?