It might be useful for some of the people reading to get an explanation of the current position in Scotland and the process which could potentially lead to independence. You hear so much nonsense from people - north and south of the border - who think it would happen days after an SNP election victory!!
Here's the potential process.
1 The SNP becomes the single largest party in the Scottish Parliament next month. With a PR system there's no realistic chance of them having a majority - and with the current arithmetic it's virtually impossible the SNP and the minor parties which also back independence will have a majority. (eg the Greens, Solidarity.)
2 The Liberal Democrats agree to a coalition deal with the SNP - but are forced to accept a referendum of independence as part of the package. (The Lib Dems say they won't do this but that's an argument for another place. It's not inconceivable they may accept a referendum as long as they have the right to campaign for a No vote. Another option may be a multi-option referendum with more devolution also a choice)
3 A referendum is held in 2010 as promised by the SNP - with Labour, the Lib Dems and the Conservatives all campaigning vigorously for a No vote along with most of the popular press. However, a Yes vote is still achieved. (The result is by no means certain. Opinion polls on independence vary widely - I suspect this is because a lot of people don't know the difference between independence and further devolution.)
As for the effect on broadcasting, the SNP's current policy is to create a Scottish Broadcasting Corporation which would, in effect, be a Scottish version of RTE.
This would, in effect, mean the main BBC tv and radio services would be replaced in Scotland - even if the SBC and the BBC maintained a close working relationship. There was a very interesting article on SNP broadcasting in the Sunday Herald a few weeks back - apologies for not having a link.
However the impact on commercial broadcasters is likely to be minimal. The links between STV and ITV Network are commercial ones - and the SNP recognise how difficult commercially it might be to actually force STV to increase Scottish output though they certainly would not complain if STV did.
I don't think there's even a suggestion of trying to interfere with C4 or five let alone the channels with no pretence of being public services.
I hate to say this, but the possibility of Scots being deprived of favourite BBC programmes would probably be quite an effective campaigning tool for unionists in the run up to any referendum. You can just imagine the headlines in the Daily Record. ("Doctor Who Faces Extermination After Independence". "Strictly No Dancing - Brucie To Disappear in Independent Scotland" etc etc etc)
To be honest I suspect many nationalists realise how unpopular this would be and, whatever their policy may be just now, they would probably leave the BBC alone in return for a Scottish Six - plus a Scottish One and Ten!!!