Web Designer/SEO

We are a printing company who already have a main website http://www.olympicprint.co.uk plus several satelite sites the addresses for which can be made available. We have recently acquired a new web address specific to our industry which we would like to add as another satelite but look at alternative suppliers.
We anticipate a fairly small site at this stage say 5 or 6 pages, hopefully with the ability to be able to amend ourselves and set up extra pages once set up. As part of this process we would also want a certain amount of SEO, including linking to our existing analytics as well as llinks to our main site and others to get the ball rolling.
We would like advice on design, whilst taking into account our main site, we can provide copy but again would like advice.
Finally our long term aim is to find someone who can take us to the next level initially on this site but if the project proves successful would be comfortable making recommendations, coming up with ideas for our existing sites to keep them at the top of the Search Engines and as important ensuring that the visitors who arrive are appropriate and sufficiently interested to contact us.