Link Building SEO - Social Networking etc.

Hi We have a website that is currently on page 50 for most of the keywords we require. We are looking for 5 key Phrases for general terms but also to make it easier to start, we are looking for geographic keywords like "Plumber in London" or "London Plumber". We need someone to help us achieve an increase in Google Positioning, this is a long term strategy and would require an ongoing link building project. We don't want Black Hat, reciprocal links .... etc etc. We would like to get involved with a team of highly professional people who can help us get this site ranked higher. Please could you submit what you believe is required and the cost? Happy to provide URL and keywords on PM. Thanks