Outlook 2010

I have something puzzling when sending an email in Outlook 2010 (32 bit on windows 7 x64).

When I send an email to ‘Fred’, my email address (not the one I am sending from, but the default email address) appears on the first line of the to box where one selects the recipients public key. Please see the screenshot - the email is only being sent to hearings@ and not CC or BCC to guy@. How can I ensure that only recipients are listed.