Context: The BBC operates several television networks, television stations (although there is generally very little distinction between the two terms in the UK), and related programming services in the United Kingdom. As well as being a broadcaster, the corporation also produces a large number of its own programmes in-house, thereby ranking as one of the world's largest television production companies.

Question: As a result of shows that the BBC itself creates, it is one of the biggest what?
Answer: television production companies

Question: Where does the BBC operate several station networks?
Answer: Unanswerable

Question: What two terms are there distinction between?
Answer: Unanswerable

Question: What ranks as one of the United Kingdom's largest television production companies?
Answer: Unanswerable