I've just been today and checked 2 vans with my tape measure.
vw caddy ans peugeot expert. the load length is bigger in the vw 2.25 meters vs 2m in the expert.the expert is a bit wider between the wheel arches but only by 5cm. you wouldn't think by looking at them .Anyway i'm also going to check a vauxhall combo lwb wich should be wider by the look of it and I'll make my decision