In my opinion, those who impose national boundaries on the fucking internet should be shot dead (after being told their wives and children will find their body in a brothel covered in faeces)
Natural boundaries are a hard thing to kill in commerce. It's noted that a large degree of software piracy in the less developed world is down to the western world attempting to charge western world prices for entertainment, pricing it out of the market- simply because if we didn't, anyone could import the cheaper CDs/DVDs to watch here.
The same people who do these barmy things are, of course, responsible for a significant amount of the music content on Spotify, and the evil puppeteers responsible for these kinds of restrictions.
If you can't stop them doing stupid things with tangible media, you're not going to stop them doing stupid things with streaming media. Innovative new companies like Spotify get caught in the crossfire, and can't grow to their full potential.
Unfortunately, in my experience, tor is far too slow for a decent Spotify connection. And I don't believe you can pick and choose your exit node, anyway.
You could probably rent a cloud server in the UK, stick a socks proxy on it, and split the bill with a few close friends.
Adverts on the free version of Spotify are absolutely infuriatingly annoying, though,