Wind noise around A-pillar

[damian Milson]

My car has a loud wind noise around the a-pillar at about 50mph or above on the driver's side only. I was intrigued that it was not happening on the passenger side and noticed that the a-pillar on the passenger side has an extra plastic 'bit' that bridges the void to the window from the a-pillar. It appears to be riveted on. Can anyone have a quick look at their car and let me know whether their cars differ from left to right.

Thanks