Agree - its okay. Clicking on the map, however, brings up the AA's website. Did you intend that. I would leave clicking on the map out (or did the AA insist on that for using a section of their streetmap?
Good web design is one that is simple to navigate and easy on the eye. So many designers try and demonstrate all their web skills, resulting in a mess that looses sight of the fact that the purpose of the site is to either sell or inform. GnoMe, as it stands your site is o.k; it is easy to navigate, and presumably explains everything that is important for a first contact. I would agree about leaving out the click facility on the map; perhaps just leaving a link to multimap or streetmap.
All singing - all dancing sites may be good for selling a product but you are offering a service and your site gives all the information that is needed. I like the link to the AA routeplanner, nothing is worse than not knowing where an advertiser is located. Though with a journey time of four and a half hours and 293 miles I may not be making a personal visit to your offices!