how can I control the 'direct links' that are displayed in Google.
Thanks for your help.
You can't "control" the direct links that Google produces. It does this automatically based on what it thinks your site structure is, and weather or not it thinks your site is reputable for the search term.
The best way is to have a clear and logical site structure that is easily navigable. You also need to produce high quality content that attracts people to your site.
There a lot of create articles out there about how to create good content.