FYI, NEVER! It would have to pass the competition commission who would never allow it. Their would be far too many objections to the buy out across the industry, plus Apple hasn't got the money I doubt, you think it's going to buy iTV for a few billion and them dump the entire company and it's thousands of staff just for a name?
ITV's current market cap is 6.3 billion pounds (about 9.8 billion US dollars).
Apple currently has 145 billion dollars in the bank as cash.
So, Apple could DEFINITELY buy ITV if they really wanted to, in a hostile takeover by buying their stock, and still have 135 billion or so left.
ITV is super large and super powerful, but Apple is so much more so.