sorry for the late reply but I'm a bit busy at the moment.
About the job in Iraq, I'm not the point of contact. Well, the best way to find out what's happen with the job is to apply on the follow link:
Tier 2 Medic - Deputy Team Leader - Iraq - Iraq, but you have to subscribe G4S maybe.
Myself, I never worked with G4S, but I think if you ask one of the moderators, as Annie or Visionneer perhaps, they can help you surely.
Sorry bro, that's all I can do for you. I wish you good luck mate, stay safe and take care.