GodLikeLotus - 6:37 pm on Feb 18, 2013 (gmt 0)
Thanks again for the comments and suggestions. As the site in question does not have high volumes of traffic, less than 1000 unique visitors each, we have elected NOT to move to wordpress or a CMS.
Instead we are having a new template design done in HTML5 and CSS3 as suggested here. We then propose to manually move each page individually to the new design, whilst keeping to original URL. Although this will take time, it does allow us to take a fresh look at every page of the site, and make any improvements that may improve the page/article.
The plan is to start with the articles that get the least traffic, allowing us to see if the new design and code improves any of our rankings.
Will post a follow up here shortly.