All those channels are on the com 7 multiplex. Com 7 can only be received by 70 percent of the united kingdom. Some of the the channels used to be on a multiplex that was more widely received in the UK but they moved to com 7 such as cbs drama and as a consequence ended up reducing there coverage. This has nothing to do with the Talktalk box you have. You are not getting them because of the way there transmitting and having less coverage.