Get My Website To Page 1 On Google

I own a small web design agency and our website has a good ranking for the town we are located in (web design alton). However, we do no get much traffic from our website, and therefore would like to target 3 new keyword phrases.

We would like to rank on page 1 of Google for the following:

web design hampshire
web design surrey
web design farnham

Please provide relevant case studies of similar projects.