Thanks @Duckchick, that’s a good idea but it’s a clio I have just now. Even if we were able to squeeze all 3 in the back, we’d need more boot space for a double buggy.
I’m not sure why but I’m leaning towards side by side. I’m thinking folding for car might be easier. But then also wondering if an inline such as silver cross wave or cosatto wow XL might be more versatile for times I only have one of youngest with me?
@JohnLapsleyParlabane another one to add to my list, thank you. Do your isofix seats have support legs and if so did you have any issues with the storage boxes?
Thanks @MKmummy123, it certainly seems popular!
Please do @ACatCalledLola, great to get ideas from someone in the same position. I want to do the same when showrooms open. I’m in Scotland so that will be a bit later. I’m caught between doing it too early but also want it done and dusted early on as ideally don’t want to be out and about later in pregnancy and I’ll be having a section so logistically more difficult to sort afterwards. Plus DH doesn’t drive 
Thanks @Gustavo1. The xc90 looks lovely but newer models beyond our budget.
@RandomMess thank you, seat Alhambra is on my list too! I like the sliding doors.
Re the galaxy, ideally I’d prefer Petrol as the kind of driving I’ll be doing, at least until I’m back in the office, doesn’t really fit with a diesel. I’ve noticed for most bigger/7 seat cars, it’s only the newer models that are petrol which obv bumps the price up. Since diesel is falling out of favour!
Thanks @MyNameHasBeenTaken, I’ll have a look at belt extenders if needed. Hadn’t heard of them! There are loads of second hand zafiras but are they not the cars that kept going on fire?
Thanks @FraterculaArctica! I’d be grateful to hear more about your research. Interestingly, the manuals I can find for the grand Picasso and space tourer suggest that support legs are fine. But then the car seat manufacturers seem to disagree! Out of interest, why not the 5 year old in the middle?