4 or 5 years service , i'd call that claim for ILR , just becuase they are out of the country working for the gov, should not effect their claim for ILR.
a few more 1000's decent people here is not goingto make much difference when are are 100,000s of eastern europeans coming here every year. like i said before they cannot stop the europeans , but they can from outside europe coming here.