As I have said previously, the package financially is near enough to each other to be considered the same. The difference between the 2 is with Serco you arrive and have a furnished flat to live in and your visas and medicals and all that are pretty much served to you on a platter. Once you are settled you can if you choose to, take the accomodation allowance and find your own place. The GCAA guys arrive here and are put up at a hotel, and they pay a lot to stay there, until they can find their feet and find a place to stay. They have to jump through a lot more of the hoops themselves to get visas/medicals whereas with Serco a lot of that is done for you. So to sum up the difference is the the amount of support from HR that you get. Serco HR is not perfect by any means, but according to GCAA guys, it sure beats what you get from GCAA. Cheers