Ok, I guess you'd normally take the car along when you buy the car seat.
Except we don't have a car, and I want to buy a basic 0+&1 seat to go in a grand-parental car (to be used probably only 3-4 times a year, for the 7 mile trip from station to house).
Will all 0+&1 seats fit all cars? Is there a way I can find out before buying? (Am thinking of getting a cheap one from Argos) And am I right in thinking that ALL car seats have to be safe in order to be certified, so it's ok to get a cheap one?
Thanks!