Ken isn't a natural fit inside a party and it is rather strange that he should want to return to Labour. Rejoined with Labour, he would be more cramped than he is now. He is one of nature's solitarians, a lone wolf. He is not a party animal; not, at any rate, in this sense. That's what Londoners liked about him. They elected him because they were looking for someone with a touch of flair, a bit of vision, and the boldness to think outside party boxes.