Looks ok to me (can be better, on the graphics side), just need touch on the following pages
1) mbworld.co.uk/temp/webhosting.htm, need to work with contrast colors
2) http://www.zmbworld.co.uk/temp/contactus.htm, again contrast
3) http://www.zmbworld.co.uk/temp/resellers.htm, contrast

so basically need contrasting colors and graphics would be beeter, not for links but as you are a company, it should show some expertise

hope this helps

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