If you have a website already - you can quickly check if it is optimised for one of the key aspects important to achieving a good search-engine ranking and position - avoiding search-engines assuming duplicate content.
Search engines are logical - they cannot really think for themselves. When they "see" a web page like this one with this address http://www.ianfairbairn.com and they index the content - if there is another page readable at this address http://ianfairbairn.com (notice there is no www) - my home page will be poorly ranked as the search engine believes there is duplicate content at these two addresses. This seriously damages the effectiveness of your website.
Either click on the second URL above (the one without the www) or try removing the "www." part of the web address at the top of this page and see what happens. This is forcing all search engines to "see" just one version of each page at my website - the version with the "www". This is very good for SEO - in fact - critical. If your website isn't doing this right now - you need to ask some questions of whoever built it.
I attend to this and a multitude of other on-site SEO issues in order to ensure your website, services & products are found easily and ahead of the competition.