Basic advertising option for 75 GBP, your website will be registered in the chosen category. Its a one time fee, will never expire. Not just the direct traffic, but the dofollow link might help you to rank better on search engines.

Premium advertising option, for 445 GBP, your website will always be featured at the top of the chosen category, with a direct link, so you receive more visitors. Valid for 12 months, after become Silver Package if you don't want to extend. Also the dofollow link might help you to rank better on search engines. You can add 3 more links pointing to your website, and an image which will appear on the category page, next to your description.