OK - I've bought a new car that I'm collecting on Weds but looking on the Britax website the car seat that I already have doesn't look as though it's compatible.
So do I buy a new car seat before then and take it with me when i collect the new car or fit the Britax one into it anyway and then literally drive to the nearest shop to buy a new one.
Can't decide which would be best/safest (she has to come with me as dh is at work)