keyword content writer

I'm interested in getting some relevant content written for my website. I currently offer man with a van services all around the London area. The whole point of this is that i would like to push my keywords further up the Google rankings. I would like somebody who has excellent grammar and will also provide some relevant content and also doesn't make it look to spammy. I've got about 10 keywords to start with so I will need about 400-500 words content for each keyword.