Can anyone recommend a compact booster seat? All the ones I've seen so far seem to be really wide - I know this may be safer but I need to fit three kids in my back seat! Youngest is in second stage car seat and the other two both need booster seats, at least for long journeys. I have one which I got from Halfords, I think, about 3 yrs ago, but can't remember the brand. This seems ok. My other one (currently used by dd in front) won't fit in the back when the other two are there. I would prefer for all kids to be in the back and anyway we will be going away en famille soon so definitely need something by New Year.