In the Airbus Beluga (and Beluga XL), the main cargo deck runs the full length of the aircraft, starting just above the cockpit. Is there more usable space behind the cockpit? Or are there fuel tanks here?
In the attached image of a Beluga, there appears to be large door immediatly forwards of the tailnumber, and a smaller door aft.
Image taken from Airbus Beluga promo site