Comment by GordonS

Agreed, there are very few cars on the market that fit the bill. There's the Ford S-Max, Peugeot 5008, and the Audi Q7 (which is ludicrously big) - I think that's it.

It really does feel like a massive gap in the market, and I wonder why that is?

BTW, if you're still looking, and depending on the age of your kids, it might be worth looking at the MultiMac - it's basically a new back bench for your car, with 3x car seats built-in.