Slightly confused about all the new laws on car seats.. baby is 8 months and currently in 0-9kg one which I think will do her at least for another few months but started to look to buy her the next one and am I right in thinking I still need a rear facing one when she moves to the next one? And all the ones I have seen on mothercare app are £400-£500 (including the base) is this the normal price range?..