I have hundreds of pieces of content that I need edited daily. They are by UK writers but using talk type so need an edit where the wrong word was used or the punctuation/paragraphing was wrong. On average about 95% correct.
They are all interesting reads and you should be able to rattle through 20 an hour. I don't need improvements or restructuring. Just corrections of the errors.
This can be full time for the right person. Knowledge of UK and US life is a distinct advantage as you will know more of the vocab related to the topics.
I will add pieces to dropbox and you will need to turn them around quickly. We will start part time and go full time as I gain confidence in you.