Hello,
Anyone know that one ?
Thx

Gill Sans Italic  Suggested by pilaster 

Larger logo here
http://www.choisir-son-comptable.com/photo/2058/CER%20France%2044%20Q.jpg
Its Gill Sans italic

Not really sure these are the same two fonts

To be honest, neither am I, but when I grabbed a copy of the large logo, it's gill sans. The small one originally posted, could be anything. Where it's legible in the Googled versions, it appears to be Gill.
http://www.google.co.uk/search?q=CER+FRANCE+logo&hl=en&client=safari&rls=en&prmd=imvns&source=lnms&tbm=isch&ei=2RGQT9y7PIqQ8QOi5KSGBA&sa=X&oi=mode_link&ct=mode&cd=2&sqi=2&ved=0CA8Q_AUoAQ&biw=1723&bih=1064

Exactly, this low quality sample could be anything Actually, it was the comma and the "p" in the sample that only "seem" different from Gill Sans, but it's really hard to be sure.

I'm making a big assumption that CER France have a coherent corporate identity and that the small version should just a shrunk version of the larger one.

It would be the logical way to do it