Icke's own webpage says:
I want to make it clear one more time because a few people have still got the wrong impression. I have not put my name forward in the upcoming by-election because I want to win and nor do I have any chance of winning. I will get a few votes at most in the time we have. Personally I am not in the least bothered if I get zero.
It is not about that. It is about taking an opportunity in a by-election called by the sitting MP on the subject of 'Big Brother' to make the point that this is far, far bigger than even he realises and unless we see the BIG picture of what is going on nothing effective can be done to stop it.
We can sit on our bums and moan, or we can do what we don't want to do (as with me in this case) to communicate what people need to know as effectively as we can.
I for one welcome our reptilian overlords.