Freelance Artworking


As I am now officially 'dolite scum', would any of you luverly people care to give me an idea of what hourly rate I should ask for freelance artworking?

I know it sounds daft but I have absolutely no idea what the going rate is now.
Haven't freelanced in a while, since about 2000. Back then I was getting between £20 and £35 and hour depending on the client.

Have been charged about £20-30 ph by agencies within the last 5 years for freelancers.