I don't know if this will be of use to anyone-you may well already know but I didn't-
I discovered yestarday that using a front facing car seat for a child under 15 months (even if over 9kgs) is going to be illegal from 01/01/2012.
Obviously this is a good thing in terms of safety, but I was on the point of buying a front facing seat for DS2 (12mo) and would have been most annoyed if some other French mum hadn't told me in the shop!
HTH