I thought that was going to be the answer.

What would you suggest would be the best thing to do?

The logical drive is shared between four departments?
The shares are NW_Evnt_Dept, NW_Mktg_Dept.

When events or marketing login they can see each others home directories and shared folders? I have removed some of the permissions but beacause I have shared the folders out to all the users to map to their home folder they are able to see one anothers directories? And it looks a bit of a mess with some forty users home folders located there?