For editing, I always use [spam].co.uk. This is the UK-based service for academic writing and here are some reasons why I have selected it for editing my papers:

- Prices - they are cheaper here than at any other writing website;
- Quality - the editors do follow my requirements. In case they need any clarification, they always ask for it.
- Support - it is available 24/7 though they are located in the UK.
- Money back guarantee - I have received a refund for the order that I decided to cancel within very short terms. So I am sure that my payments are safe.

The most reputable service for dissertation writing, in my opinion, is cool essay.
I used it for my Master's dissertation and was happy about the result I received. Yes, there were several revisions but I understand that the writer cannot do it perfectly at once. The dissertation is a big chunk of work and it is great that the writers from cool essays can do it just within 14 days.

I recommended this website to my girlfriend - she is studying biology at college and orders assignments such as lab reports at this this website as well. Thus, i think it will work for you perfectly.