No, the plans haven't got that far yet and the beauty parade may not be signed off until very close to the launch of the USO.
EDIT : Just to add, Ofcom haven't even gone out to providers yet and haven't defined the terms the providers would have to operate under. Don't hold your breath. They also haven't defined what will be considered a minimum but I don't think 4G would be an approved technology so something else may be provided under USO.
EDIT 2 : To add again... If 4G was considered to be adequate then no matter whether they have signed up for a service or not wouldn't be of relevance - the fact it is available would be enough to rule it out. But, as I said in edit 1 it is unlikely or the number of USO intervention sites would be much much lower than currently expected.
Edited by ian72 (Mon 23-Apr-18 13:40:43)