I'm a criminal mastermind, so I use rookies on a tight schedule
So here we have Fayed who is able to both acquire a low-grade nuclear weapon and engineer a prisoner snatch, so who does he send to pick up a vital component to his mission of terror? A rookie. What is the backup plan? There isn't one. What is the window of opportunity? A couple hours. Even assuming the transaction goes off without a hitch, the rookie could still get caught in traffic and miss the rendesvous. Why not have everything ready for the weapons expert a day in advance? I think I'm thinking about the logic of the show too much again.