I think it's Avenir...

Really, oh my god

Thanks I will check it out

Yep it is, thanks

… but you wouldn’t call that a serif. ;°)

oh yeah, sorry, I was in a Serif frame of mind and was confusing things,

well spotted

It can be actually Avenir Next as it seems the Ultralight style is used on the website...

http://www.linotype.com/90672/avenirnext-family.html