Alternative options would have more luck
If they want to stop people downloading illegally, they need to offer real alternatives.
I don't want a CD. I will not buy a CD. I don't have a CD player, I have mp3 players. A CD is of use to me for precisely the amount of time it takes to rip the mp3s. Why would I want piles of CDs cluttering up my home? Offer the mp3s for sale legally, at a decent price, and I will buy them. Offer nothing but CDs and I will find another way to get what I want.
Similar for TV shows. I am not going to wait until UK broadcast, by which time some muppet from the US will have told me who is a Cylon, who dies, etc. Offer me a way to buy the episodes of my favourite shows, legally and at a decent price (not twice what they pay in the US - I'm looking at you, iTunes) and I'll pay it. But I'm not going to wait months for shows just for the warm fuzzy feeling of being a good girl. Again - I will find another way.
They need to make it easier to get things legally than to get them illegally. The trouble is, they're going in the wrong direction, trying to restrict downloading - when if they'd just offer alternatives half the battle would be won.