Wrekin, Give us a shout on email
Grant.draper@blueyonder.co.uk, where abouts in midlands.
Midlands is nothing compared to down south, i'm not a full timer so can't have an accurate view but i can see that a price fluctuates.
I think the image you put across to a customer can determine the price you can charge.
For instance, a bloke on a bike with a rusty pair on ladders and a trowel would probably get a little less than a bloke in a 57 plate vito with professional marketing material.
Charge what your worth.
For you, if your doing a gutter clean it would take you 1-2 hours on an average house, that tells me it should be £30-60, if you don't think you can get a premiuim rate, dont try, but dont undercut what you charge for window cleaning.
I'm in the midlands, and i know my old man takes a good half a day, he gets paid a decent wage and i know for the sake of being up and down them ladders he'd pay £50 every 6-9 months - Its just the fact of getting people like this as a customer, as he hates doorknockers.
Post was more of a general rant than anything usefull - take what you will.
Some people will snuff, you cant have it all!