The navbars need to have a more consistent colour scheme - you have yellow, grey and red colours with different rollover colours again causing confusion if you ask me. The code under the bonnet looks a bit old fashioned. The <META content="Microsoft FrontPage 4.0" name=GENERATOR> is a giveaway. Have a read of this site:
http://webstandardsgroup.org/ in some detail and you'll start to see the issues raised by the markup/code used on this kind of website. Seeing as you are also based in the UK I would point you in the direction of this page...
http://www.webcredible.co.uk/user-fr...irements.shtml
Forewarned is to be forearmed (as they say). HTH