Why would we be surprised at this double standard?
I seem to recall exactly the same argument being used when Labour supporting Jimmy Carr was discovered to be a bit creative about paying his taxes, in that he wasn't much doing it.
Cameron was on him like a ton of bricks, and only remembered that prime ministers don't comment on individual cases when it turned out his mate, the Tory Gary Barlow, obe, from Take That, was also on the fiddle.
At least their double standards are consistent.
Now that BetterTogether are Better Apart, run by the Conservatives and the Liberals, we discover that the joke ex prime minister and part time MP, Gordon Brown, has renounced his North British nationality, which he so proudly trumpeted whilst on his first visit to the USA as prime minister some years ago, just before he saved the world. He has presumably applied for, and been granted Scottish nationality, of which he is also proud.
Cometh the day, cometh the appropriate nationality.
Has anyone told Alistair Darling that the Tories and The Liberals, are now running Better Together? Is there redundancy pay?