The scandal going on in Iceland is far more juicy and interesting than David Cameron's involvement here. The PM is up to his neck in it, and denied it on tv up the point he was shown something with his signature on (and then still kept denying!) as are some of his coalition partners. Of course all the banks went to prison there, if you believe the myth of how Iceland 'won' the economic melt down. (All bollocks made up to suit socialist agendas btw, which is so depressing I don't even know where to begin).
As for David Cameron. Personally, I don't like tax arrangements like this, even when they were legal. Nor do I like who has benefited from them either directly or indirectly. They are morally wrong and everyone doing it knows they are wrong and on the fringes of legality even when they were still legal. Hence the who business of secrecy in the first place. Even those who did it legally, played a part in legitimising this type of business and hiding illegal activity if only through the sheer amount and nature of this invisible transactions. The idea that they 'hurt no one' is hideously misguided.
However I don't believe it would be right to hold someone 'accountable' for their father's affairs as that sets a dangerous precedent for other financial arrangements. (Eg your father runs up dodgy debt and you are responsible after his death).
Also it is true that this government have been trying to close loopholes up. Not as aggressively as I'd like, but what did Mr Blair and Brown do? It is not a question of blue v red. Nor a question of class. More about those who have money, and therefore ability and reason to do this who comes from all social backgrounds originally.
I think its great this has come out for so many reasons. It will make it increasingly harder for individuals, groups and states to justify this and be able to hide it. But it is important we focus on what are the worst abuses here and what murky trails they find to elsewhere.
I don't think David Cameron should go. I think the Iceland PM should go, and I think he should be follows by a few other leading individuals throughout the world.