I got mine in the US and I play it on my laptop , it's the kind of blue cover one. It is now available on Amazon and Play for the UK region, I think that's region 2. It is the black cover one at £9.98.
It is really good, she talks all the way through it which is engaging and distracts from the pain !! and gives close direction for how to do the moves. I haven't dare go beyond level 1 yet. It is really good and she really knows her stuff. I like that the moves are simple, I find the routines on some exercise DVDs so complicated I can't keep up and I don't feel like I'm getting a good workout .