hi my baby is due on the 16Th of jan.
we had the same problem, we purchased the quinny buzz with the maxi cosie cabrio car seat, mothercare said this was fine wiyhout a base for our 52 plate sportscross, they fitted it in the car and said it was fine without the base.
also toysrus at the moment are selling these for about £100 cheaper than mothercare
cheers kirkyboy
ps goodluck to everyone