OK, I've searched the section and found that 2 trials bikes will fit into a Combo van - but my question is:-

Will 2 bikes fit into a CREW version, with the rear seats folded down?

I need 4 seats for occasional family use (picking up kids from school etc) but only use the 2 front seats when out on the bikes, with 2 bikes loaded in the back

Thanks in advance

No

The combo with seats will have less space than a normal van. With the seats folded down the floor of the .van will be higher and a bike will not fit in.