Proof reading and editing job

I have just published a new book on new innovations relevant to successful international development initiatives. I received a sample copy from the publisher few days ago. What I need is a proof reader that can scan through and do light reading on the book to ensure that everything is okay before I print the book in mass for sale. I hope the situation or circumstance of the book is understood. I need brief spelling and punctuation cross-checking as well as grammar and paragraph check – not rewriting of work. Please can you assist me? Kindly let me know via a reply to this email. I am based in North London.