Especially since the introduction of digital TV all sorts of new TV channels have been popping up - most people can now get 50 or so TV channels via a "Freeview" receiver (ie a non-subscription terrestrial digital receiver). The analogue TV transmissions are being switched off in a phased manner over the next 2 or 3 years (in my part of England it's happening in November this year) which will free up bandwidth for yet more TV and radio stations.
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