Could the Airservices enroute guys provide an approach service to the same degree as the yanks???
I am not aware of any genetic differences that would preclude it. It would just take big gobs of training for all ATC concerned. At the moment that would be all enrooters, but it is worth noting that under the SDE project being contemplated at the moment the number requiring training would be substantially reduced. Only Regional Services would be involved, and any infighting between Towers & Enroot will all be contained in the same division...
If SDE is implemented first they would be able to directly compare the costs of providing the service now with what is intended if further NAS stuff is implemented. Veeeerrrrryyyy interesting