Not really a computer question, but...
 

Until recently, when watching BBC 1 news on satelite, after the main bulletin the local news was replaced by a generic "local" bulletin.

Now, you can see the correct local news bulletin. How do they broadcast all the different local bulletins on the same channel, and how does my digibox know which one to show?

Sky broadcasts all the regional BBC stations, if you go to the programme list you can pick and watch any one you wish.

Your default station is set by Sky and linked to your card, based on the post code given when you first signed up.

Thanks for that ORAC