The Voyager layout
G_CGTN
I think you are confusing heavy lift a/c with the A330 Voyager operated by Air Tanker Limited as a military troop transport / IFR a/c for the RAF and other EU air forces.
The interior of the Voyager is quite comfortable and better than BA world traveller class. If you turn left at the front door, there is a segregated cabin of six rows with its own toilet, where normally Senior Officers, flight engineers, resting crew and any paying pax are seated (such as on the runs to Ascension Island and Falklands).
I am sure that front cabin could be reconfigured as VIP on one of the Voyagers and any lucky commissioned Army officer would be more than pleased to use Dave's seat if it was empty.