Context: The domestic TV BBC television channels are broadcast without any commercial advertising and collectively they account for more than 30% of all UK viewing. The services are funded by a television licence.

Question: What percentage of viewership across the UK is constituted by the BBC?
Answer: 30%

Question: What are BBC channels broadcast without?
Answer: Unanswerable

Question: How much UK viewing do domestic BCB channels account for?
Answer: Unanswerable

Question: What are commercial services funded by?
Answer: Unanswerable