Poll: Freelance developers in London, how much do you charge per hour?

We've had this for the US freelancers quite a few times but I'm interested in what my fellow Londoners are charging so I can figure out what the market expects.

If you charge by the day, assume an 8-hour working day and divide your fee by 8.

If you'd like to post a comment about what you charge and why you feel it's a fair fee, that would be helpful.

Thanks very much.