Yep- my son is ten weeks. Order your seat online and you don't get the guilt trip!
If the seat belt is good enough to hold an adult it will hold a child seat, IMO. We have a Maxi Cosi Cabrio which fits nicely in the back of my 3-door. Very well reviewed by all the safety testers. THey are available from most online retailers and go well with buggies etc. Well worth the £70.
Don't worry about the scare tactics of the sales people- make your own decisions about your own child's safety. I promise you will drive much more sedately with them in the car!!
PM me if you need more details.
