I you look closely, I that 400F has an N reg. that is because it was an Atlas aircraft - hence the Atlas logo under the cockpit. Atlas used to operate the BAWC contract and painted an aircraft in the colours just as they do with their 2 400Fs operated for and on behalf of Emirates. The current GSS scheme is actually Atlas' scheme with a few mods - Atlas own the aircraft. The GSS aircaft do have a small BA logo on the forward fuselage.
Atlas ceased to operate the BAWC contract due to pressure from the CAA thanks to a campaign against flagging out from the IPA. The jobs only became British on formation of GSS due to this pressure and there was a lot of anger from the American pilots who believed their jobs were being taken away from them.
I'm not going to comment on who's jobs I think they are, but I do feel sorry for the GSS FOs who have had the carrot of a command dangled to see it whipped away. Also 411A has a good point that if the operation does get integrated, BA management will have successfuly managed to introduce a B scale. Beware!