No, the Bulldog could not be configured to carry anyone other than the 2 pilots.
Going to have to disagree there Beagle....The Scottish Aviation Bulldog is a British two-seat side-by-side (with optional third seat) training aircraft designed by Beagle Aircraft as the B.125 Bulldog. That's from the RAF website on UAS's
I also remember seeing the attachments in place on the floor behind and asked the C.O. what they were for.