Provide counter-evidence, and if you like we can debate any bias between the two then at the same time.
You also said a living wage would become a defacto NMW; so the same economics would apply as well.
The same economics wouldn't apply if you raise it without applying the same logic. I know critical thinking isn't a strong point of yours but really...
In fact, finding anything for the uk will be problematic as the proposal has never been tried. Would studies from europe suffice?