I have been considering about proof-reading of my thesis. In face, several friends of mine have similar concerns as well, whose mother tongue is not English. Blogger Michael Bird, a New Testament scholar, who recently posted this: Academic Editing. It is from a company called You Need an Editor. Here is what it says on the webpage briefing about what they can do about the academic editing.
Being an expert in your field does not necessarily mean that English is your forté. That is where we come in. Our staff specialise in academic editing. By cleaning up the English in your document we can significantly improve your chance of journal publication or acceptance into your preferred course.
Our staff edit according to the Australian Standards of Editing Practice, and the Policy on Research Thesis Editing by Professional Editors. We are also able to edit to the requirements of the specific journal you may be seeking publication with, or the guidelines of your particular university. Special services are available for students from non English-speaking countries who wish to submit assignments that have the clarity of a native English speaker. We won’t rewrite your papers, but we will certainly polish them.
You are investing in your future. Significant research deserves quality editing. You need an editor.