The amount of money they spend guarding the embassy is ridicules. A similar spending would have been accepted if it was just some random guy. The British public should furious about wasting £12.6 million trying to catch a guy that many not be guilty, or may only be guilty of something that's only rape in the Swedish sense.
Don't get me wrong, if guilty then I don't care who he is. In that case he should be punished. It's just that I don't think Sweden should be allowed to hand him over to the US afterwards.
Still the amount of money wasted trying to catch him should say something about why the UK police wants him. You simply don't spend that kind of money trying to catch a person, just so you can question him.