April figures down
If I remember correctly DUO ceased operating on 1st May 2004. So that said, April 2004 would still include DUO passenger numbers, so the impact of DUO's demise will show in the BHX passenger figures until April 2005.
Now May's figures will be interesting as these should show a notable improvement year on year as May 2004 was very poor.
We are a few weeks away from finding out.