BA 777 on longrange heavy crew Flts have Club World rest seats in addition to the Bunks. On those aircraft that have been upgraded the Club world seats turn into beds. In general the Dispatcher will be faced with overbooking in that cabin so quite often will be happy to block off a First seat in exchange. Having said that most guys seem to go straight to the bunk. On the 747-400 it's a little different as First is downstairs and the Club seats just aft of the flight deck door have an obvious security advantage.........