I've recently installed a powerline kit and connected my 2nd box to it via an ethernet cable. All services work apart from live TV. The help videos don't mention that you cannot watch live TV in this way. My question is do I need to have a new socket installed and a coaxial cable hooked up to the box?
Yes this is something that the engineer should be able to install when he arrives and wouldn't need to be pre arranged. This would only apply when we need to complete what's called a repull/rebury of the cables on the front of your property where the external cables come in underground and this is a 2 man job.