Is broadband phone available everywhere in the UK?

No, broadband phone isn't available everywhere in the UK. As of 2023, some rural and remote areas still either do not have access to broadband phone or have very limited availability. The Universal Service Obligation (USO), ensures that everyone in the UK has access to a basic level of communication services, but the USO does not include broadband as a regulated service, so there is no guarantee that broadband will be available in all areas.