Irrespective of what systems were only operable fro the rear crew positions the aircraft, once electrically charged for starting could be operated by one crewmember in the captains seat. My experience is based on the last of the V bombers, the Valiant, but that could be operated single pilot.
Butterworth to Gan: Heavy night before we left. Two hours to go I am the only one awake. I carried on with the last heading when the NBS nav function started wobbling and was in the descent almost at the stage of lowering the undercarriage when the rest of the crew woke up.