Showroom stock can be supplied as long as they are not pre-registered. We were offered a showroom stock car from a dealership some years ago, didn’t go for it in the end as we found a short lead time vehicle at another dealers in the colour we wanted (an existing dealership order, so was delivered in 2 weeks).
All motability are concerned with is “is it a new car” – pre-registered are not considered even with zero miles on the clock as Motability would be the second owner.
In life, it's not who you know that's important, it's how your wife found out.